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VMware has addressed multiple critical remote code execution (RCE) vulnerabilities in VMware ESXi and vSphere Client virtual infrastructure management platform that may allow attackers to execute arbitrary commands and take control of affected systems. "A malicious actor with network access to port 443 may exploit this issue to execute commands with unrestricted privileges on the underlying operating system that hosts vCenter Server," the company  said  in its advisory. The vulnerability, tracked as CVE-2021-21972, has a CVSS score of 9.8 out of a maximum of 10, making it critical in severity. "In our opinion, the RCE vulnerability in the vCenter Server can pose no less a threat than the infamous vulnerability in Citrix (CVE-2019-19781)," said Positive Technologies' Mikhail Klyuchnikov, who discovered and reported the flaw to VMware. "The error allows an unauthorized user to send a specially crafted request, which will later give them the opportunity ...

RawCap sniffer for Windows released We are today proude to announce the release of RawCap, which is a free raw sockets sniffer for Windows. Here are some highlights of why RawCap is a great tool to have in your toolset: Can sniff any interface that has got an IP address, including 127.0.0.1 (localhost/loopback) RawCap.exe is just 17 kB No external libraries or DLL's needed No installation required, just download RawCap.exe and sniff Can sniff most interface types, including WiFi and PPP interfaces Minimal memory and CPU load Reliable and simple to use Usage RawCap takes two arguments; the first argument is the IP address or interface number to sniff from, the second is the path/file to write the captured packets to. C:\Tools>RawCap.exe 192.168.0.23 dumpfile.pcap You can also start RawCap without any arguments, which will leave you with an interactive dialog where you can select NIC and filename: C:\Tools>RawCap.exe Network interfaces: 0. 192.168.0.23 ...

Virtualization and networking infrastructure have been targeted by a threat actor codenamed Fire Ant as part of a prolonged cyber espionage campaign. The activity, observed this year, is primarily designed Now to infiltrate organizations' VMware ESXi and vCenter environments as well as network appliances, Sygnia said in a new report published today. "The threat actor leveraged combinations of sophisticated and stealthy techniques creating multilayered attack kill chains to facilitate access to restricted and segmented network assets within presumed to be isolated environments," the cybersecurity company said . "The attacker demonstrated a high degree of persistence and operational maneuverability, operating through eradication efforts, adapting in real time to eradication and containment actions to maintain access to the compromise infrastructure." Fire Ant is assessed to share tooling and targeting overlaps with prior campaigns orchestrated by UNC3886 , a...

UTM (Unified threat management) is thought to be an all-in-one solution for cybersecurity. In general, it is a versatile software or hardware firewall solution integrated with IPS (Intrusion Prevention System) and other security services. A universal gateway allows the user to manage network security with one comprehensive solution, which makes the task much easier. In addition, compared to a conventional firewall, such systems are capable of detecting and blocking more sophisticated attacks. SafeDNS has recently released such a solution, and this is what this article is going to be about. Who needs UTMs? Most of all, UTMs are valued by SMEs - the all-in-one solution makes it simple to manage all their cybersecurity solutions and services. This also cuts down a lot of communications between vendors, since UTMs are easily supported by one IT team. This leads to another upside of the system - it can be cost-effective, as there is no need to pay a bunch of vendors & extra for tech ...

VMware has  released  security updates to fix a trio of flaws in Aria Operations for Networks that could result in information disclosure and remote code execution. The most critical of the three vulnerabilities is a command injection vulnerability tracked as  CVE-2023-20887  (CVSS score: 9.8) that could allow a malicious actor with network access to achieve remote code execution. Also patched by VMware is another  deserialization vulnerability  ( CVE-2023-20888 ) that's rated 9.1 out of a maximum of 10 on the CVSS scoring system. "A malicious actor with network access to VMware Aria Operations for Networks and valid 'member' role credentials may be able to perform a deserialization attack resulting in remote code execution," the company said in an advisory. The third security defect is a high-severity information disclosure bug ( CVE-2023-20889 , CVSS score: 8.8) that could permit an actor with network access to perform a command injection attack and...

Threat actors have been found deploying never-before-seen post-compromise implants in VMware's virtualization software to seize control of infected systems and evade detection. Google's Mandiant threat intelligence division referred to it as a "novel malware ecosystem" that impacts VMware ESXi, Linux vCenter servers, and Windows virtual machines, allowing attackers to maintain persistent access to the  hypervisor  as well as execute arbitrary commands. The  hyperjacking attacks , per the cybersecurity vendor, involved the use of malicious vSphere Installation Bundles ( VIBs ) to sneak in two implants, dubbed VIRTUALPITA and VIRTUALPIE, on the ESXi hypervisors. "It is important to highlight that this is not an external remote code execution vulnerability; the attacker needs admin-level privileges to the ESXi hypervisor before they can deploy malware," Mandiant researchers Alexander Marvi, Jeremy Koppen, Tufail Ahmed, and Jonathan Lepore said in an exhaus...

Broadcom has released security updates to patch five security flaws impacting VMware Aria Operations and Aria Operations for Logs, warning customers that attackers could exploit them to gain elevated access or obtain sensitive information. The list of identified flaws, which impact versions 8.x of the software, is below - CVE-2025-22218 (CVSS score: 8.5) - A malicious actor with View Only Admin permissions may be able to read the credentials of a VMware product integrated with VMware Aria Operations for Logs CVE-2025-22219 (CVSS score: 6.8) - A malicious actor with non-administrative privileges may be able to inject a malicious script that may lead to arbitrary operations as admin user via a stored cross-site scripting (XSS) attack CVE-2025-22220 (CVSS score: 4.3) - A malicious actor with non-administrative privileges and network access to Aria Operations for Logs API may be able to perform certain operations in the context of an admin user CVE-2025-22221 (CVSS score: 5.2) ...

VMware has released security updates to address a critical flaw in the vCenter Server that could result in remote code execution on affected systems. The issue, tracked as  CVE-2023-34048  (CVSS score: 9.8), has been described as an out-of-bounds write vulnerability in the implementation of the  DCE/RPC protocol . "A malicious actor with network access to vCenter Server may trigger an out-of-bounds write potentially leading to remote code execution," VMware  said  in an advisory published today. Credited with discovering and reporting the flaw is Grigory Dorodnov of Trend Micro Zero Day Initiative. VMware said that there are no workarounds to mitigate the shortcoming and that security updates have been made available in the following versions of the software - VMware vCenter Server 8.0 (8.0U1d or 8.0U2) VMware vCenter Server 7.0 (7.0U3o) VMware Cloud Foundation 5.x and 4.x Given the criticality of the flaw and the lack of temporary mitigations, the v...

VMware has patched five security flaws affecting its  Workspace ONE Assist  solution, some of which could be exploited to bypass authentication and obtain elevated permissions. Topping the list are three critical vulnerabilities tracked as CVE-2022-31685, CVE-2022-31686, and CVE-2022-31687. All the shortcomings are rated 9.8 on the CVSS vulnerability scoring system. CVE-2022-31685 is an authentication bypass flaw that could be abused by an attacker with network access to VMware Workspace ONE Assist to obtain administrative access without the need to authenticate to the application. CVE-2022-31686 has been described by the virtualization services provider as a "broken authentication method" vulnerability, and CVE-2022-31687 as a "Broken Access Control" flaw. "A malicious actor with network access may be able to obtain administrative access without the need to authenticate to the application," VMware  said  in an advisory for CVE-2022-31686 and CVE-202...

Broadcom has alerted of a high-severity security flaw in VMware Avi Load Balancer that could be weaponized by malicious actors to gain entrenched database access. The vulnerability, tracked as CVE-2025-22217 (CVSS score: 8.6), has been described as an unauthenticated blind SQL injection. "A malicious user with network access may be able to use specially crafted SQL queries to gain database access," the company said in an advisory issued Tuesday. Security researchers Daniel Kukuczka and Mateusz Darda have been acknowledged for discovering and reporting the vulnerability. It affects the following version of the software - VMware Avi Load Balancer 30.1.1 (Fixed in 30.1.2-2p2) VMware Avi Load Balancer 30.1.2 (Fixed in 30.1.2-2p2) VMware Avi Load Balancer 30.2.1 (Fixed in 30.2.1-2p5) VMware Avi Load Balancer 30.2.2 (Fixed in 30.2.2-2p2) Broadcom further noted that versions 22.x and 21.x are not susceptible to CVE-2025-22217, and that users running version 30.1.1 must...

VMware has shipped updates to address two security vulnerabilities in vCenter Server and Cloud Foundation that could be abused by a remote attacker to gain access to sensitive information. The more severe of the issues concerns an arbitrary file read vulnerability in the vSphere Web Client. Tracked as CVE-2021-21980, the bug has been rated 7.5 out of a maximum of 10 on the CVSS scoring system, and impacts vCenter Server versions 6.5 and 6.7. "A malicious actor with network access to port 443 on vCenter Server may exploit this issue to gain access to sensitive information," the company  noted  in an advisory published on November 23, crediting ch0wn of Orz lab for reporting the flaw. The second shortcoming remediated by VMware relates to an  SSRF  (Server-Side Request Forgery) vulnerability in the Virtual storage area network (vSAN) Web Client plug-in that could allow a malicious actor with network access to port 443 on vCenter Server to exploit the flaw by acces...

Chinese-speaking threat actors are suspected to have leveraged a compromised SonicWall VPN appliance as an initial access vector to deploy a VMware ESXi exploit that may have been developed as far back as February 2024. Cybersecurity firm Huntress, which observed the activity in December 2025 and stopped it before it could progress to the final stage, said it may have resulted in a ransomware attack. Most notably, the attack is believed to have exploited three VMware vulnerabilities that were disclosed as zero-days by Broadcom in March 2025: CVE-2025-22224 (CVSS score: 9.3), CVE-2025-22225 (CVSS score: 8.2), and CVE-2025-22226 (CVSS score: 7.1). Successful exploitation of the issue could permit a malicious actor with admin privileges to leak memory from the Virtual Machine Executable (VMX) process or execute code as the VMX process. That same month, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) added the flaws to the Known Exploited Vulnerabilities (KEV) ca...

The Chinese state-sponsored group known as  UNC3886  has been found to exploit a zero-day flaw in VMware ESXi hosts to backdoor Windows and Linux systems. The VMware Tools authentication bypass vulnerability, tracked as  CVE-2023-20867  (CVSS score: 3.9), "enabled the execution of privileged commands across Windows, Linux, and PhotonOS (vCenter) guest VMs without authentication of guest credentials from a compromised ESXi host and no default logging on guest VMs," Mandiant  said . UNC3886 was  initially documented  by the Google-owned threat intelligence firm in September 2022 as a cyber espionage actor infecting VMware ESXi and vCenter servers with backdoors named VIRTUALPITA and VIRTUALPIE. Earlier this March, the group was  linked  to the exploitation of a now-patched medium-severity security flaw in the Fortinet FortiOS operating system to deploy implants on the network appliances and interact with the aforementioned malware. The th...

VMware on Tuesday released software to remediate four security vulnerabilities affecting  vRealize Log Insight  (aka Aria Operations for Logs) that could expose users to remote code execution attacks. Two of the flaws are critical, carrying a severity rating of 9.8 out of a maximum of 10, the virtualization services provider noted in its first security bulletin for 2023. Tracked as CVE-2022-31706 and CVE-2022-31704, the directory traversal and broken access control issues could be exploited by a threat actor to achieve remote code execution irrespective of the difference in the attack pathway. "An unauthenticated, malicious actor can inject files into the operating system of an impacted appliance which can result in remote code execution," the company  said  of the two shortcomings. A third vulnerability relates to a deserialization flaw (CVE-2022-31710, CVSS score: 7.5) that could be weaponized by an unauthenticated attacker to trigger a denial-of-service (DoS...

Last year, the popular system cleanup software CCleaner suffered a massive supply-chain malware attack of all times, wherein hackers compromised the company's servers for more than a month and replaced the original version of the software with the malicious one. The malware attack infected over 2.3 million users who downloaded or updated their CCleaner app between August and September last year from the official website with the backdoored version of the software. Now, it turns out that the hackers managed to infiltrate the company's network almost five months before they first replaced the official CCleaner build with the backdoored version, revealed Avast executive VP and CTO Ondrej Vlcek at the RSA security conference in San Francisco on Tuesday. 6-Months Timeline of CCleaner Supply Chain Attack Vlcek shared a brief timeline of the last year's incident that came out to be the worst nightmare for the company, detailing how and when unknown hackers breached Pi...

VMware ESXi hypervisors are the target of a new wave of attacks designed to deploy ransomware on compromised systems. "These attack campaigns appear to exploit CVE-2021-21974, for which a patch has been available since February 23, 2021," the Computer Emergency Response Team (CERT) of France  said  in an advisory on Friday. VMware, in its own alert released at the time, described the issue as an  OpenSLP  heap-overflow vulnerability that could lead to the execution of arbitrary code. "A malicious actor residing within the same network segment as ESXi who has access to port 427 may be able to trigger the heap-overflow issue in OpenSLP service resulting in remote code execution," the virtualization services provider  noted . French cloud services provider OVHcloud  said  the attacks are being detected globally with a specific focus on Europe. It's being suspected that the intrusions are related to a new Rust-based ransomware strain called Nevada th...

VMware has released updates to address critical flaws impacting Cloud Foundation, vCenter Server, and vSphere ESXi that could be exploited to achieve privilege escalation and remote code execution. The list of vulnerabilities is as follows - CVE-2024-37079 & CVE-2024-37080 (CVSS scores: 9.8) - Multiple heap-overflow vulnerabilities in the implementation of the DCE/RPC protocol that could allow a bad actor with network access to vCenter Server to achieve remote code execution by sending a specially crafted network packet CVE-2024-37081 (CVSS score: 7.8) - Multiple local privilege escalation vulnerabilities in VMware vCenter arising due to the misconfiguration of sudo that an authenticated local user with non-administrative privileges could exploit to obtain root permissions This is not the first time VMware has addressed shortcomings in the implementation of the DCE/RPC protocol. In October 2023, the Broadcom-owned virtualization services provider patched another criti...

For the first time in 2025, Microsoft's Patch Tuesday updates did not bundle fixes for exploited security vulnerabilities, but the company acknowledged one of the addressed flaws had been publicly known. The patches resolve a whopping 130 vulnerabilities , along with 10 other non-Microsoft CVEs that affect Visual Studio, AMD, and its Chromium-based Edge browser. Of these, 10 are rated Critical and the remaining are all rated Important in severity. "The 11-month streak of patching at least one zero-day that was exploited in the wild ended this month," Satnam Narang, Senior Staff Research Engineer at Tenable, said. Fifty-three of these shortcomings are classified as privilege escalation bugs followed by 42 as remote code execution, 17 as information disclosure, and 8 as security feature bypasses. These patches are in addition to two other flaws addressed by the company in the Edge browser since the release of last month's Patch Tuesday update . The vulnerability ...

However, manual lab setup and configuration can prove to be a laborious and time-consuming process. In this article, we'll look at 4 ways to create a reverse engineering lab, discuss how to save time, and, potentially, improve the detection rate using a  sandbox-as-a-service , and a recommended list of tools for a comprehensive setup. What is a malware analysis lab? In essence, a malware analysis lab provides a safe, isolated space for examining malware. The setup can range from a straightforward virtual machine using VirtualBox to a more intricate network of interconnected machines and actual networking hardware. But in this article, we'll look at building a lab tailored for static analysis, so what we will need is a secure environment where we can run disassemblers, edit binary files and debug. There are a couple of ways we can go about creating it: 1 — Virtualization Perhaps the simplest way to create a secure and isolated environment is by using a virtual machine....