Vulnerability | Breaking Cybersecurity News | The Hacker News

A type confusion flaw in PostgreSQL lets a database user who can create objects run code on the server. Updates released yesterday fix it, along with 51 other security flaws. Full protection from this flaw also requires rebuilding any C-language extensions installed on the server. The flaw, tracked as CVE-2026-6460 , has a CVSS score of 8.8. Any code run this way has the rights of the operating system user that runs PostgreSQL. All versions before 18.7, 17.12, 16.16, 15.20, and 14.25 are affected. The PostgreSQL Global Development Group, which publishes the database's releases, has not reported any attacks using the flaw. CISA's assessment in the CVE record also lists exploitation as none. The flaw involves composite types, which are types built from named fields, each with its own data type. A field's type can be changed while older values of that type are still held in other parts of the server. The server could then read an old value as if it had the new type. T...

Two attacks made public this week allow a malicious host to read data inside AMD SEV-SNP-protected virtual machines (VMs), which are built to keep the server's operator out. One of them, Mior , can also modify a VM's memory and fake the signed report confirming which software it runs. Both need control of the server's hypervisor, and Mior also needs control of the server's BIOS. Researchers showed both in lab tests on AMD EPYC server processors. AMD, which makes the processors, lists SEV firmware for Mior and microcode for Skyfall , both dated August 12. It plans to give server makers platform firmware in November for Skyfall and in December for Mior, and fixes for embedded chips later. Customers are told to get the BIOS update from their server maker. SEV-SNP brings confidential computing to AMD EPYC server processors. It uses hardware-enforced memory encryption and access control to protect a VM, even from the host's hypervisor. The ETH Zurich team behin...

Three Trezor Safe 5 wallets bought from the reseller CryptoBilis contain an implant, an extra circuit board that can copy their recovery phrases, hardware wallet maker Trezor said yesterday. The implant reads the phrase from the wallet's screen and sends it over the mobile network to a server controlled by the attackers. The company examined one of the wallets in its lab, identified the other two from photos their owners sent, and has had no reports of lost funds. A firmware update released earlier this week, version 2.13.1, stops the implants found so far from capturing anything on wallets that run it, the company said, but “the update can’t protect a wallet backup that was captured before it.” The company has not changed its advice to anyone who bought a Trezor from CryptoBilis since March, including from the reseller's stores on Tokopedia and Shopee: Move your funds to a new wallet with a new recovery phrase. Restoring the old phrase on another wallet does not ...

An unknown threat actor has been observed targeting unpatched Check Point Security Gateways to obtain initial access via the PHP2Shell vulnerabilities and then a previously unreported local privilege escalation flaw in Gaia OS  to deploy a backdoor called TSGA . The activity, detailed by Check Point, began on October 30, 2026, and targeted Israeli organizations, with a broader follow-up wave on November 2, 2026, that targeted organizations across multiple countries and sectors. Some of the organizations singled out in the first wave have also been at the receiving end of destructive actions that include the deployment of wiper malware. "PHP2Shell provided initial access, followed by privilege escalation through the DynamicCLI interface, tracked as CVE-2026-123039 ," Check Point said. "The attackers then deployed PHP web shells, the persistent TSGA backdoor, and its embedded TSProxy networking component." "The attackers pivoted from the gateway to a VMw...

N-able on Thursday said it's taking additional precautions in the wake of public disclosure of a new set of flaws tracked as 4EverAble2Shell and Agent2Shell . "We are restricting certain N-central features and integrations," the company said in a Thursday update. "These measures may affect some functionality, but we believe taking additional precautions while remediation is completed is the right action to protect our partners and their customers." The following actions have been applied to Hosted environments - Legacy API is turned off by default in the product. Intune integration has been turned off while additional protections are implemented and validated. Hosted customers are also being recommended to follow N-able's previous guidance to upgrade Agents and Probes on N-central version 2026.4 HF1 and above, as the update introduces changes in how the Probe and Agent communicate. "N-able N-central 2026.4 HF1 updates legacy componen...

A search result isn't always safe. An access request isn't always harmless. And a familiar account doesn't always mean a familiar person is using it. Simple things to remember. Yet a surprising amount of this week's trouble starts right there. Attackers are using fake websites, stolen access, and trusted tools to get into places they shouldn't be. AI is helping them build attacks faster, while also giving them new systems to target. Some intruders are staying hidden even after security holes are fixed. Others are moving stolen money through a maze of transactions. And researchers keep finding small coding mistakes that can cause much bigger problems. Different stories, but much of the trouble comes down to making something dangerous look normal. There is some good news, too. Criminal servers have been seized, and a few defenses are getting stronger. Still, plenty of things are going wrong in ways that shouldn't be this easy. Here's what turned up this w...

Public exploit code released earlier this week claims that a local Windows user can gain SYSTEM privileges through the Common Log File System driver. The proof of concept, called SignDrop , targets a log-authentication feature added to the driver last year. It abuses how clfs.sys creates companion files when a privileged process opens a prepared log, using path redirection to take control of the operation. Microsoft has not confirmed the claimed flaw, assigned a CVE, or released a fix. The researcher behind the exploit, who publishes under the name MSNightmare , released the code and a detailed writeup on GitHub on Tuesday, the same day the company published its November security updates. CLFS is a logging subsystem built into Windows. Its driver has been a frequent target for privilege escalation: 10 CLFS flaws appear in CISA's catalog of vulnerabilities known to have been exploited in attacks, including one used in ransomware campaigns in April 2025. To reduce that expo...

A critical flaw in Red Hat Quay allows an attacker who can access a Quay registry to read and overwrite private container images in every repository. Quay enables anonymous access by default, and while it is enabled, the attacker needs no account. When it is off, anyone with a valid account can still exploit the flaw, Red Hat said yesterday. The company has released fixed builds for eight Quay 3 branches. The flaw is tracked as CVE-2026-123710 (CVSS score: 9.8). Quay uses keys it trusts to sign the access tokens that allow image pushes and pulls. The flaw lets an attacker add their own key to the keys Quay trusts, with no expiry date. Quay then accepts tokens signed with that key for any repository. With those tokens, an attacker can retrieve private images and any secrets or credentials stored within them. The attacker can also push or overwrite images, and the change propagates to every system that later pulls those images. The planted key survives restarts until someone ...

Citrix has released patches for multiple critical security flaws impacting NetScaler ADC, Citrix NetScaler Gateway, and NetScaler Console that could lead to denial-of-service (DoS) or an authentication bypass. The critical vulnerabilities that impact NetScaler ADC and NetScaler Gateway are listed below - CVE-2026-120868 (CVSS score: 9.3) - A memory overflow vulnerability in Packet Processing can lead to unpredictable or erroneous behavior or DoS. (All NetScaler ADC and NetScaler Gateway deployments) CVE-2026-107407 (CVSS score: 9.3) - A memory overflow vulnerability in SMPP traffic can lead to unpredictable or erroneous behavior or DoS. (NetScaler ADC configured with a Load Balancing or Content Switching virtual server of type SMPP) CVE-2026-107408 (CVSS score: 9.3) - A memory corruption vulnerability in DNS / DNS-over-HTTPS (DoH) can lead to unpredictable or erroneous behavior or DoS. (NetScaler ADC configured for DNS load balancing and recursive DNS resolution) C...

The ongoing campaign targeting ConnectWise ScreenConnect deployments involves the exploitation of a now-patched critical security flaw in the remote access software, and not a new vulnerability, it has emerged. Blackpoint Cyber's Adversary Pursuit Group (APG), which shared the details with The Hacker News, said the recovered attacker toolkit exploits CVE-2026-84869 (CVSS score: 9.9), an improper privilege management and missing authorization vulnerability that could allow an attacker to file transfer and execute through an active remote session without authorization or host confirmation. The cybersecurity company confirmed that testing against a fully patched ScreenConnect client successfully prevents execution of the exploit's payload. "Our testing confirmed that the exploit targets CVE-2026-84869 and that the existing patch successfully blocks it," APG researchers Sam Decker and Nevan Beal said. "That's an important finding for security teams....

Google Cloud VMs on AMD Turin chips need a guest OS patch and a stop-and-start to protect against three CPU side-channel flaws, Google said this week. The company has already applied mitigations against attacks between VMs, and between VMs and the host. Inside a VM, the flaws may let an attacker with code on the same processor core infer data from other processes or the kernel. The affected machine series are C4D, N4D, H4D, Z4D,, and G4, including bare-metal instances of C4D and Z4D. Turin is the code name for fifth-generation AMD EPYC processors. All three flaws are Transient Scheduler Attacks (TSA). Two of them, TSA-SQ (CVE-2024-36350) and TSA-L1 (CVE-2024-36357), were first disclosed on July 8, 2025, for earlier EPYC processors. AMD now says its Zen 5 processors, which include Turin, are "impacted differently from previously characterized AMD processors." The third flaw, CVE-2026-0004, is new. It may let an attacker who can run code on a system infer data in the p...

N-able on Thursday said it's investigating a new public disclosure containing claims of additional vulnerabilities in on-premise versions of N-central running version 2026.4.1 HF2. "Based on our initial review, the server issue described depends on a non-default configuration in which the Legacy API is turned on and exposed to the public internet," N-able said in a new advisory. "Legacy API is turned off by default in the product and is not recommended." The company is urging customers to disable Legacy API immediately, if not already. It also noted that hosted environments are not affected by this issue. The incident impacts the following services - N-central On-premise (Americas) N-central On-premise (APAC) N-central On-premise (Europe) The development comes days after N-able released 2026.4.1.26 to address a number of security flaws disclosed by independent security researcher Sean Bales earlier this week. The vulnerabilities are collec...

PTC has released patches for a new critical vulnerability impacting Windchill and FlexPLM software that, if successfully exploited, could result in remote code execution. The security flaw, tracked as CVE-2026-126325 , carries a CVSS v4 score of 9.2 out of a maximum of 10.0. It has been described as a case of improper input validation and deserialization of untrusted data that could result in remote code execution via crafted requests. "A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill and PTC FlexPLM," according to a description of the flaw on CVE.org. "The vulnerability may be exploited through the deserialization of untrusted data." The CVE record lists the following versions as affected - PTC Windchill: 11.0 M030, 11.1 M020, 11.2.1.0, 12.0.2.0, 12.1.2.0, 13.0.2.0, 13.1.0.0, 13.1.1.0, 13.1.2.0, 13.1.3.0, 13.1.4.0 PTC FlexPLM: 11.0 M030, 11.1 M020, 11.2.1.0, 12.0.2.0, 12.1.2.0, 13.0.2.0, 13.1.0.0, 13.1.1.0, ...

A critical flaw in MongoDB Server allows an unauthenticated attacker to send two requests that trigger a crash on the database server. The crash occurs only if that server is later chosen to take over as the main server while it still lacks some recent changes. MongoDB, the company that makes the database, released fixed versions earlier this week. The affected servers are members of a replica set, a group of MongoDB servers that keep copies of the same data. One member, the primary, serves as the main server and handles all new writes, while the others replicate them. If the primary becomes unavailable, the other members hold an election to pick a new primary. Researchers at Datadog Security Labs reproduced the crash in a lab and published their findings yesterday. On vulnerable versions, turning on authentication does not stop the two requests. An attacker cannot make the targeted member fall behind or win an election, or see when either happens, the researchers said. The fl...

A flaw fixed in Node.js this week lets unauthenticated clients crash servers that use the runtime's built-in HTTP/2 support on the 24.x and 26.x release lines. A second HTTP/2 flaw can cause a server to send a client pieces of its memory, including responses intended for other connections. Fixed versions were released for all three supported lines: 22.23.5, 24.22.3, and 26.13.1. The crash flaw, CVE-2026-123863 , needs only a default HTTP/2 server that replies before the request body has fully arrived. The Node.js project calls that behavior typical. The crash works over both TLS and cleartext connections. The memory flaw, CVE-2026-123866, affects all three lines. From 24.22.0 and 26.9.0 onward, a client alone can trigger it. On 22.x and older 24.x and 26.x builds, it can still be triggered when the server itself closes a stream partway through a response, for example after an idle timeout. A separate flaw in Node.js HTTPS servers, CVE-2026-123864, can allow an unauthenti...

A critical flaw in Apache HTTP Server's HTTP/2 module, mod_http2 , can let a remote attacker run code on the server. Tracked as CVE-2026-119618 , it affects versions 2.4.55 through 2.4.70 and is fixed in version 2.4.71, released yesterday. Only servers with HTTP/2 enabled are affected, according to Red Hat, which ships the server as part of Red Hat Enterprise Linux. An attacker who can reach the server needs no authentication to exploit the flaw and could take full control of the server process, the Linux vendor says. It rates the flaw 9.8 out of 10 on the CVSS scale. The vendor's assessment, published yesterday, also says "public research has demonstrated a reliable exploit" against a server in its default configuration with mod_http2 enabled. It does not name or link that research. Security company Wiz said later that day that no exploit was available and that no exploitation in the wild had been reported. HTTP/2 runs only where the Protocols directive turn...

Zoom has released software updates to address two security flaws impacting Zoom Workplace for Windows, including a critical bug that could result in privilege escalation on affected systems. The vulnerabilities are listed below - CVE-2026-108186 (CVSS score: 9.6) - An improper input validation vulnerability that could allow an unauthenticated user to conduct an escalation of privilege via network access. CVE-2026-108187 (CVSS score: 8.1) - An origin validation vulnerability that could allow an unauthenticated user to conduct an escalation of privilege via network access. Successful exploitation of either of the shortcomings could permit remote attackers to escalate privileges without requiring any special permissions or access. While CVE-2026-108187 affects Zoom Workplace for Windows before version 7.1.5, CVE-2026-108186 impacts versions starting from 7.1.0 and before 7.1.8. Earlier this July, the popular videoconferencing platform shipped fixes for another improper ...

Threat actors have been observed targeting Qlik Sense servers to unsuccessfully deliver PowerShell reverse shell commands against multiple environments in October 2026. Cynet's CyOps and Research teams said they identified the suspicious activity in October 2026 against several E.U.-based customers within a narrow window of just over three minutes. The activity has been found to share some level of overlap with a November 2023 campaign documented by Arctic Wolf in which threat actors linked to the CACTUS ransomware operation likely weaponized then-newly-disclosed flaws in Qlik Sense to obtain initial access to target environments. The vulnerabilities in question, which were patched by Qlik Sense in August and September 2023, impact Qlik Sense Enterprise for Windows -

The in-house Python script behind eMudhra's October key compromise has now cost the company 8 more of its intermediate certificate authorities (CAs), even though it did not weaken their keys. Each intermediate CA has its own private key, which the company uses to sign the certificates it issues. The 8 intermediate CAs compromised in October had a different problem: a single line in the script cut each of their keys to one byte, the company said this week. The script also retrieved the RSA keys of the 8 newly revoked CAs from the company's hardware security modules (HSMs). The company says it cannot show that the keys were handled as required by its own rules. It revoked the CAs late last week. The company had called those CAs unaffected. "The RSA issuers went through a different path as per our assessment of the code and are therefore not impacted," it wrote on Mozilla's bug tracker on October 19. Of the 8, 6 were for website (TLS) certificates and 2 for...

Microsoft on Tuesday released patches for a total of 1,259 vulnerabilities spanning its software portfolio, the second consecutive month where the patch volume has exceeded 1,000 flaws. These cover 726 flaws in Windows, 174 in Office, 61 in Developer Tools, 59 in SQL Server, 53 in Developer Tools, and 27 in SharePoint Server. The patches also include 165 non-Microsoft-issued CVE identifiers. More than 500 flaws relate to elevation of privilege, followed by remote code execution and information disclosure bugs. With the latest round of fixes, Microsoft has addressed over 5,100 CVEs this year alone, according to Satnam Narang, senior staff research engineer at Tenable. Of these, a Moderate-severity security flaw in Microsoft Outlook ( CVE-2026-124194 , CVSS score: 6.5) has been flagged as actively exploited by Microsoft.  "Product UI does not warn users of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network," ...