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Citrix has released fixes to address three security flaws in NetScaler ADC and NetScaler Gateway, including one that it said has been actively exploited in the wild. The vulnerabilities in question are listed below - CVE-2025-7775 (CVSS score: 9.2) - Memory overflow vulnerability leading to Remote Code Execution and/or Denial-of-Service CVE-2025-7776 (CVSS score: 8.8) - Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial-of-Service CVE-2025-8424 (CVSS score: 8.7) - Improper access control on the NetScaler Management Interface The company acknowledged that "exploits of CVE-2025-7775 on unmitigated appliances have been observed," but stopped short of sharing additional details. However, for the flaws to be exploited, there are a number of prerequisites - CVE-2025-7775 - NetScaler must be configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server; NetScaler ADC and NetScaler Gateway 13.1, 14.1...

Citrix has released security updates for a high-severity security flaw impacting NetScaler Console (formerly NetScaler ADM) and NetScaler Agent that could lead to privilege escalation under certain conditions. The vulnerability, tracked as CVE-2024-12284 , has been given a CVSS v4 score of 8.8 out of a maximum of 10.0. It has been described as a case of improper privilege management that could result in authenticated privilege escalation if the NetScaler Console Agent is deployed and allows an attacker to execute post-compromise actions. "The issue arises due to inadequate privilege management and could be exploited by an authenticated malicious actor to execute commands without additional authorization," Netscaler noted . "However, only authenticated users with existing access to the NetScaler Console can exploit this vulnerability, thereby limiting the threat surface to only authenticated users." The shortcoming affects the below versions - NetScaler Cons...

Citrix is  alerting  users of a critical security flaw in NetScaler Application Delivery Controller (ADC) and Gateway that it said is being actively exploited in the wild. Tracked as  CVE-2023-3519  (CVSS score: 9.8), the issue relates to a case of  code injection  that could result in unauthenticated remote code execution. It impacts the following versions - NetScaler ADC and NetScaler Gateway 13.1 before 13.1-49.13 NetScaler ADC and NetScaler Gateway 13.0 before 13.0-91.13 NetScaler ADC and NetScaler Gateway version 12.1 (currently end-of-life) NetScaler ADC 13.1-FIPS before 13.1-37.159 NetScaler ADC 12.1-FIPS before 12.1-55.297, and NetScaler ADC 12.1-NDcPP before 12.1-55.297 The company did not give further details on the flaw tied to CVE-2023-3519 other than to say that exploits for the flaw have been observed on "unmitigated appliances." However, successful exploitation requires the device to be configured as a Gateway (VPN virtual server, ...

Cybersecurity researchers have detailed two now-patched security flaws in SAP Graphical User Interface (GUI) for Windows and Java that, if successfully exploited, could have enabled attackers to access sensitive information under certain conditions. The vulnerabilities, tracked as CVE-2025-0055 and CVE-2025-0056 (CVSS scores: 6.0), were patched by SAP as part of its monthly updates for January 2025 . "The research discovered that SAP GUI input history is stored insecurely, both in the Java and Windows versions," Pathlock researcher Jonathan Stross said in a report shared with The Hacker News. SAP GUI user history allows users to access previously entered values in input fields with the goal of saving time and reducing errors. This historical information is stored locally on devices. This can include usernames, national IDs, social security numbers (SSNs), bank account numbers, and internal SAP table names. The vulnerabilities identified by Pathlock are rooted in th...

A recently disclosed critical security flaw impacting Citrix NetScaler ADC and NetScaler Gateway is witnessing active reconnaissance activity, according to Defused Cyber and watchTowr . The vulnerability, CVE-2026-3055 (CVSS score: 9.3), refers to a case of insufficient input validation leading to memory overread, which an attacker could exploit to leak potentially sensitive information. Per Citrix, successful exploitation of the flaw hinges on the appliance being configured as a SAML Identity Provider (SAML IDP). "We are now observing auth method fingerprinting activity against NetScaler ADC/Gateway in the wild," Defused Cyber said in a post on X. "Attackers are probing /cgi/GetAuthMethods to enumerate enabled authentication flows in our Citrix honeypots." This is likely an attempt on the part of threat actors to determine if NetScaler ADC and NetScaler Gateway are indeed configured as a SAML IDP. In a similar warning, watchTowr said it has detected active...

Citrix has released security updates to address two vulnerabilities in NetScaler ADC and NetScaler Gateway, including a critical flaw that could be exploited to leak sensitive data from the application. The vulnerabilities are listed below - CVE-2026-3055 (CVSS score: 9.3) - Insufficient input validation leading to memory overread CVE-2026-4368 (CVSS score: 7.7) - Race condition leading to user session mixup Cybersecurity company Rapid7 said that CVE-2026-3055 refers to an out-of-bounds read that could be exploited by unauthenticated remote attackers to leak potentially sensitive information from the appliance's memory. However, for exploitation to be successful, the Citrix ADC or Citrix Gateway appliance must be configured as a SAML Identity Provider (SAML IDP), which means default configurations are unaffected. To determine if the device has been configured as a SAML IDP Profile, Citrix is urging customers to inspect their NetScaler Configuration for the specified st...

F5 has alerted customers of a critical security vulnerability impacting BIG-IP that could result in unauthenticated remote code execution. The issue, rooted in the configuration utility component, has been assigned the CVE identifier  CVE-2023-46747 , and carries a CVSS score of 9.8 out of a maximum of 10. "This vulnerability may allow an unauthenticated attacker with network access to the BIG-IP system through the management port and/or self IP addresses to execute arbitrary system commands," F5  said  in an advisory released Thursday. "There is no data plane exposure; this is a control plane issue only." The following versions of BIG-IP have been found to be vulnerable - 17.1.0 (Fixed in 17.1.0.3 + Hotfix-BIGIP-17.1.0.3.0.75.4-ENG) 16.1.0 - 16.1.4 (Fixed in 16.1.4.1 + Hotfix-BIGIP-16.1.4.1.0.50.5-ENG) 15.1.0 - 15.1.10 (Fixed in 15.1.10.2 + Hotfix-BIGIP-15.1.10.2.0.44.2-ENG) 14.1.0 - 14.1.5 (Fixed in 14.1.5.6 + Hotfix-BIGIP-14.1.5.6.0.10.6-ENG) 13.1.0 - ...

Citrix has released security updates to address a critical flaw affecting NetScaler ADC that it said has been exploited in the wild. The vulnerability, tracked as CVE-2025-6543 , carries a CVSS score of 9.2 out of a maximum of 10.0. It has been described as a case of memory overflow that could result in unintended control flow and denial-of-service. However, successful exploitation requires the appliance to be configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server. The shortcoming impacts the below versions - NetScaler ADC and NetScaler Gateway 14.1 prior to 14.1-47.46  NetScaler ADC and NetScaler Gateway 13.1 prior to 13.1-59.19 NetScaler ADC and NetScaler Gateway 12.1 and 13.0 (vulnerable and end-of-life) NetScaler ADC 13.1-FIPS and NDcPP prior to 13.1-37.236-FIPS and NDcPP "Secure Private Access on-prem or Secure Private Access Hybrid deployments using NetScaler instances are also affected by the vulnerabilities," Citrix ...

Citrix is warning of exploitation of a recently disclosed critical security flaw in NetScaler ADC and Gateway appliances that could result in exposure of sensitive information. Tracked as  CVE-2023-4966  (CVSS score: 9.4), the vulnerability impacts the following supported versions - NetScaler ADC and NetScaler Gateway 14.1 before 14.1-8.50 NetScaler ADC and NetScaler Gateway 13.1 before 13.1-49.15 NetScaler ADC and NetScaler Gateway 13.0 before 13.0-92.19 NetScaler ADC and NetScaler Gateway 12.1 (currently end-of-life) NetScaler ADC 13.1-FIPS before 13.1-37.164 NetScaler ADC 12.1-FIPS before 12.1-55.300, and NetScaler ADC 12.1-NDcPP before 12.1-55.300 However, for exploitation to occur, it requires the device to be configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or authorization and accounting (AAA) virtual server. While patches for the flaw were released on October 10, 2023, Citrix has now revised the advisory to note that "exploits of CV...

Citrix is warning of two zero-day security vulnerabilities in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway) that are being actively exploited in the wild. The flaws are listed below - CVE-2023-6548 (CVSS score: 5.5) - Authenticated (low privileged) remote code execution on Management Interface (requires access to NSIP, CLIP, or SNIP with management interface access) CVE-2023-6549 (CVSS score: 8.2) - Denial-of-service (requires that the appliance be configured as a Gateway or authorization and accounting, or AAA, virtual server) The following customer-managed versions of NetScaler ADC and NetScaler Gateway are impacted by the shortcomings - NetScaler ADC and NetScaler Gateway 14.1 before 14.1-12.35 NetScaler ADC and NetScaler Gateway 13.1 before 13.1-51.15 NetScaler ADC and NetScaler Gateway 13.0 before 13.0-92.21 NetScaler ADC and NetScaler Gateway version 12.1 (currently end-of-life) NetScaler ADC 13.1-FIPS before 13.1-37.176 NetS...

The Dutch National Cyber Security Centre (NCSC-NL) has warned of cyber attacks exploiting a recently disclosed critical security flaw impacting Citrix NetScaler ADC products to breach organizations in the country. The NCSC-NL said it discovered the exploitation of CVE-2025-6543 targeting several critical organizations within the Netherlands, and that investigations are ongoing to determine the extent of the impact. CVE-2025-6543 (CVSS score: 9.2) is a critical security vulnerability in NetScaler ADC that results in unintended control flow and denial-of-service (DoS) when the devices are configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server. The vulnerability was first disclosed in late June 2025, with patches released in the following versions - NetScaler ADC and NetScaler Gateway 14.1 prior to 14.1-47.46 NetScaler ADC and NetScaler Gateway 13.1 prior to 13.1-59.19 NetScaler ADC 13.1-FIPS and NDcPP prior to 13.1-37.236-FIPS and NDcPP ...

F5 is warning of active abuse of a critical security flaw in BIG-IP less than a week after its public disclosure, resulting in the execution of arbitrary system commands as part of an exploit chain. Tracked as  CVE-2023-46747  (CVSS score: 9.8), the  vulnerability  allows an unauthenticated attacker with network access to the BIG-IP system through the management port to achieve code execution. A proof-of-concept (PoC)  exploit  has since been made  available  by ProjectDiscovery. It impacts the following versions of the software - 17.1.0 (Fixed in 17.1.0.3 + Hotfix-BIGIP-17.1.0.3.0.75.4-ENG) 16.1.0 - 16.1.4 (Fixed in 16.1.4.1 + Hotfix-BIGIP-16.1.4.1.0.50.5-ENG) 15.1.0 - 15.1.10 (Fixed in 15.1.10.2 + Hotfix-BIGIP-15.1.10.2.0.44.2-ENG) 14.1.0 - 14.1.5 (Fixed in 14.1.5.6 + Hotfix-BIGIP-14.1.5.6.0.10.6-ENG) 13.1.0 - 13.1.5 (Fixed in 13.1.5.1 + Hotfix-BIGIP-13.1.5.1.0.20.2-ENG) Now the company is  alerting  that it has "observed th...

Cloud security and application delivery network ( ADN ) provider F5 on Wednesday released patches to contain 43 bugs spanning its products. Of the  43 issues addressed , one is rated Critical, 17 are rated High, 24 are rated Medium, and one is rated low in severity. Chief among the flaws is  CVE-2022-1388 , which carries a CVSS score of 9.8 out of a maximum of 10 and stems from a lack of authentication check, potentially allowing an attacker to take control of an affected system. "This vulnerability may allow an unauthenticated attacker with network access to the BIG-IP system through the management port and/or self IP addresses to execute arbitrary system commands, create or delete files, or disable services," F5 said in an advisory. "There is no data plane exposure; this is a control plane issue only." The security vulnerability, which the company said was discovered internally, affects BIG-IP products with the following versions - 16.1.0 - 16.1.2 15.1.0 ...

Cybersecurity researchers today issued a security advisory warning enterprises and governments across the globe to immediately patch a highly-critical remote code execution vulnerability affecting F5's BIG-IP networking devices running application security servers. The vulnerability, assigned CVE-2020-5902 and rated as critical with a CVSS score of 10 out of 10, could let remote attackers take complete control of the targeted systems, eventually gaining surveillance over the application data they manage. According to Mikhail Klyuchnikov, a security researcher at Positive Technologies who discovered the flaw and reported it to F5 Networks, the issue resides in a configuration utility called Traffic Management User Interface (TMUI) for BIG-IP application delivery controller (ADC). BIG-IP ADC is being used by large enterprises, data centers, and cloud computing environments, allowing them to implement application acceleration, load balancing, rate shaping, SSL offloading, an...

Days after F5 released patches for a critical remote code execution vulnerability affecting its BIG-IP family of products, security researchers are warning that they were able to create an exploit for the shortcoming. Tracked  CVE-2022-1388  (CVSS score: 9.8), the flaw relates to an iControl REST authentication bypass that, if successfully exploited, could lead to remote code execution, allowing an attacker to gain initial access and take control of an affected system. This could range anywhere from deploying cryptocurrency miners to dropping web shells for follow-on attacks, such as information theft and ransomware. "We have reproduced the fresh CVE-2022-1388 in F5's BIG-IP," cybersecurity company Positive Technologies  said  in a tweet on Friday. "Patch ASAP!" The critical security vulnerability impacts the following versions of BIG-IP products - 16.1.0 - 16.1.2 15.1.0 - 15.1.5 14.1.0 - 14.1.4 13.1.0 - 13.1.4 12.1.0 - 12.1.6 11.6.1 - 11.6.5 Fixe...

Citrix has released  security updates  to address a critical authentication bypass flaw in the application delivery controller (ADC) and Gateway products that could be exploited to take control of affected systems. Successful exploitation of the issues could enable an adversary to gain authorized access, perform remote desktop takeover, and even circumvent defenses against login brute-force attempts under specific configurations. CVE-2022-27510  - Unauthorized access to Gateway user capabilities CVE-2022-27513  - Remote desktop takeover via phishing CVE-2022-27516  - User login brute-force protection functionality bypass The following supported versions of Citrix ADC and Citrix Gateway are affected by the flaws - Citrix ADC and Citrix Gateway 13.1 before 13.1-33.47  Citrix ADC and Citrix Gateway 13.0 before 13.0-88.12  Citrix ADC and Citrix Gateway 12.1 before 12.1.65.21 Citrix ADC 12.1-FIPS before 12.1-55.289 Citrix ADC 12.1-NDcPP befor...

The U.S. National Security Agency (NSA) on Tuesday  said  a threat actor tracked as APT5 has been actively exploiting a zero-day flaw in Citrix Application Delivery Controller (ADC) and Gateway to take over affected systems. The critical remote code execution vulnerability, identified as  CVE-2022-27518 , could allow an unauthenticated attacker to execute commands remotely on vulnerable devices and seize control. Successful exploitation, however, requires that the Citrix ADC or Citrix Gateway appliance is configured as a SAML service provider (SP) or a SAML identity provider (IdP). The following supported versions of Citrix ADC and Citrix Gateway are affected by the vulnerability - Citrix ADC and Citrix Gateway 13.0 before 13.0-58.32 Citrix ADC and Citrix Gateway 12.1 before 12.1-65.25 Citrix ADC 12.1-FIPS before 12.1-55.291 Citrix ADC 12.1-NDcPP before 12.1-55.291 Citrix ADC and Citrix Gateway versions 13.1 are not impacted. The company also said there are no...

Apple on Wednesday  announced  a raft of security measures, including an Advanced Data Protection setting that enables end-to-end encrypted (E2EE) data backups in its iCloud service. The headlining feature, when turned on, is expected to secure 23 data categories using E2EE, including device and message backups, iCloud Drive, Notes, Photos, Reminders, Voice Memos, Safari Bookmarks, Siri Shortcuts, and Wallet Passes. The iPhone maker said the only major iCloud data categories that are still not protected by E2EE are Mail, Contacts, and Calendar because of the "need to interoperate with the global email, contacts, and calendar systems" that use legacy technologies. Advanced Data Protection's E2EE protections for iCloud also mean that users' personal data can only be decrypted on their trusted devices, which retain the encryption keys. "If you enable Advanced Data Protection and then lose access to your account, Apple will not have the encryption keys to help ...

Threat actors are suspected to be exploiting a maximum-severity security flaw impacting Quest KACE Systems Management Appliance (SMA), according to Arctic Wolf. The cybersecurity company said it observed malicious activity starting the week of March 9, 2026, in customer environments that's consistent with the exploitation of CVE-2025-32975 on unpatched SMA systems exposed to the internet. It's currently not known what the end goals of the attack are. CVE-2025-32975 (CVSS score: 10.0) refers to an authentication bypass vulnerability that allows attackers to impersonate legitimate users without valid credentials. Successful exploitation of the flaw could facilitate the complete takeover of administrative accounts. The issue was patched by Quest in May 2025. In the malicious activity detected by Arctic Wolf, threat actors are believed to have weaponized the vulnerability to seize control of administrative accounts and execute remote commands to drop Base64-encoded payloads ...

A critical flaw in Progress Software's in MOVEit Transfer managed file transfer application has come under widespread exploitation in the wild to take over vulnerable systems. The shortcoming, which is assigned the CVE identifier CVE-2023-34362 , relates to a severe SQL injection vulnerability that could lead to escalated privileges and potential unauthorized access to the environment. "An SQL injection vulnerability has been found in the MOVEit Transfer web application that could allow an unauthenticated attacker to gain unauthorized access to MOVEit Transfer's database," the company  said . "Depending on the database engine being used (MySQL, Microsoft SQL Server, or Azure SQL), an attacker may be able to infer information about the structure and contents of the database in addition to executing SQL statements that alter or delete database elements." Patches for the bug have been made available by the Massachusetts-based company, which also owns Teler...