THREAT ADVISORIES

This dangerous Linux security hole must be patched as soon as possible.

An OpenSSH flaw that lets remote attackers log into passwordless accounts on Alpine Linux and other musl-based systems is being exploited, threat intelligence firm Previdian has warned. The flaw (CVE-2026-123158), nicknamed sshole by Wakefield researcher Özgün Kültekin, was fixed in OpenSSH 10.6p2 on November 5. “An attacker who can reach your SSH port can log in without knowing any password. It takes one connection, works every time, and needs no retries,” the Alpine Linux team … More → The post OpenSSH flaw exploited in the wild just hours after disclosure (CVE-2026-123158) appeared first on Help Net Security .

OpenAI GPT-6 Cyber found 81 high-severity Firefox flaws and hundreds of Linux bugs, raising new questions about AI-powered cyber risks. OpenAI has introduced GPT-6 Cyber, a model built for security research that it says finds and fixes vulnerabilities better and stays within the limits researchers set far more reliably. These are OpenAI’s own results and […]

CVE-2026-119977 lets hackers hijack WordPress sites during core updates. CISA confirms exploitation as users are told to patch…

Two flaws in Barracuda's Email Security Gateway, an email-filtering appliance, can be chained to run commands on it as root, its highest level of access, with no login required. The company released patches on Monday, and the security firm watchTowr detailed the attack chain on Thursday. One flaw, CVE-2026-116606, is an authorization bypass. An unauthenticated attacker can use it to restore a

SonicWall SonicOS SSLVPN contains a use of single-factor authentication vulnerability that may allow a user with valid credentials for an alternate authentication method to bypass SAML authentication controls. Successful exploitation may also bypass SAML-enforced multi-factor authentication (MFA).

In October 2026, Insikt Group® identified 82 high-impact vulnerabilities that should be prioritized for remediation, 52 of which had a Very Critical Recorded Future Risk Score. This represents a 13% decrease from last month.

Google's November security update fixes a critical Android vulnerability that can interrupt cellular calls through a hidden message. Here's how to check your device. The post Android SMS of Death Flaw: How to Check If Your Phone Is Patched appeared first on TechRepublic .

Attackers can log in to accounts that have no password, such as SSH key-only accounts, on some Alpine Linux servers running the standard openssh-server package. They need network access to the server, an account name, and a password between 257 and 1,024 bytes long. OpenSSH, which rates the flaw critical, released version 10.6p2 today to block it. Alpine has published fixed packages for every

Zyxel GS1900 series network switches that received a fix for a flaw that was later reported to have been exploited in the wild are still open to an exploit attackers used, Binarly found. That’s because the patch fixed a different bug (CVE-2026-7273) from the one (CVE-2026-107441) the exploit actually relies on. The exploit for an unpatched bug In June 2026, Zyxel published an advisory on CVE-2026-7273, a stack-based buffer overflow vulnerability in the CGI program … More → The post Patched Zyxel GS1900 switches remained open to in-the-wild exploit (CVE-2026-107441) appeared first on Help Net Security .

An attacker could write arbitrary files and read sensitive files via images uploaded to the Rails Active Storage ImageMagick integration, possibly positioning a threat actor for lateral movement.

Barracuda patched two flaws that can be chained to give attackers root access to Email Security Gateway appliances. Barracuda has patched two vulnerabilities that can be chained to gain root access to its Email Security Gateway (ESG) appliances. CVE-2026-116606 (CVSS score of 9.3) is an authentication bypass that lets unauthenticated attackers modify appliance configurations. CVE-2026-111560 […]

Zyxel has patched a zero-day vulnerability in its GS1900 series network switches that hackers exploited to compromise nearly 1,000 devices worldwide and steal configuration files and credentials. [...]

SonicWall has warned of two vulnerabilities impacting end-of-life Global Management System (GMS) systems that it said will not be patched. Details of the security flaws, which affect SonicWall GMS 9.5.2 and earlier versions, are below - CVE-2026-109593 (CVSS score: 9.1) - An unauthenticated file read vulnerability that could allow an attacker with network access to read internal GMS files,

One of the early web application vulnerabilities I remember was CVE-2000-0411 [CVE]. This was a simple vulnerability in a CGI-bin script used to send e-mail. The vulnerability was pretty straightforward: Adding additional parameters to the URL leaked environment variables. Other vulnerabilities allowed setting the "To" address and were heavily abused by spammers. And if parameters were passed directly to the sendmail binary, similar vulnerabilities could allow arbitrary code execution.

Your browser may not have updated itself yet. Here’s how to check your version and install the fix manually.

A critical flaw in Ruby on Rails could allow an unauthenticated attacker to write arbitrary files on an app's server by uploading a crafted file if the app processes uploads using ImageMagick. The Rails project disclosed the flaw in an advisory and fixed it in versions 8.1.4.1 and 8.0.5.2. The flaw is in Active Storage, the part of Rails that handles file uploads. Some apps store

Critical Android flaw CVE-2026-58868 could allow remote code execution without user interaction on devices running Android 14 through 17. Google has fixed CVE-2026-58868, a critical Android vulnerability affecting versions 14 through 17. The flaw is a critical Android vulnerability caused by a heap buffer overflow in the onOutputReceived function of FrameDecoder.cpp. The flaw can trigger […]

Executive Summary PHP2Shell (CVE-2026-109618 and CVE-2026-109619) allows unauthenticated remote code execution on exposed PHP servers. PHP has released fixed versions. On Linux, distribution packages carry the fix. On Windows and macOS, they don’t: Microsoft and Apple don’t ship PHP, so the fix is an in-place PHP upgrade that has traditionally been done by hand, one […]

A critical Android flaw could allow an attacker to run code on a phone without any user action remotely, Google said in its November security bulletin. The flaw, CVE-2026-58868, affects Android 14 through 17. Phones get the fix with security patch level 2026-11-01 or later, which phone makers and carriers send on their own schedules. As of November 4, Google's bulletin did not report

The rsync project released version 3.5.2, and it closes a flaw that let a connecting client tie up a server’s CPU with checksum math that leads nowhere. The new version also lets you push a transfer to the back of the queue for CPU and disk, so a big sync stops elbowing everything else on the machine. rsync is an open-source utility that copies files locally and across a network, and it is widely used … More → The post Open-source file sync tool rsync 3.5.2 fixes a CPU exhaustion flaw appeared first on Help Net Security .

Barracuda has disclosed details of two vulnerabilities affecting its products that, if chained together, could allow an attacker to bypass authorization controls and gain root access to a susceptible device. The vulnerabilities, a pre-authentication authorization bypass vulnerability and a command injection vulnerability, have been assigned the CVE identifiers CVE-2026-116606 (CVSS score: 9.3)

Cybersecurity company Barracuda Networks warned customers to patch two vulnerabilities that can let attackers run commands with root privileges. [...]

Attackers are exploiting an authentication flaw (CVE-2026-58115) in Node-RED, a programming tool built into some industrial control products, to install a Linux bot and backdoors on unprotected servers, VulnCheck has found. Node-RED is a flow-based programming tool built on Node.js that lets users wire together event-driven applications in a browser-based editor. It can run on small devices such as the Raspberry Pi or in the cloud, and it is used in manufacturing, healthcare, and home … More → The post Attackers exploit critical Node-RED flaw to deploy Linux bot and backdoors (CVE-2026-58115) appeared first on Help Net Security .

View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to execute unauthorized SQL commands and gain access to unauthorized resources. The following versions of Subnet Solutions PowerSYSTEM Center are affected: PowerSYSTEM Center 2020 <=5.29.x (CVE-2026-63017) PowerSYSTEM Center 2024 >=6.0.x|<=6.2.x (CVE-2026-63017, CVE-2026-63774) PowerSYSTEM Center 2026 >=7.0.x|<=7.1.x (CVE-2026-63017, CVE-2026-63774) CVSS Vendor Equipment v3 9 Subnet Solutions PowerSYSTEM Center 2 Vulnerabilities Incorrect Authorization, Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') Background Critical Infrastructure Sectors: Critical Manufacturing, Energy Countries/Areas Deployed: Worldwide Company Headquarters Location: Canada Vulnerabilities Expand All + CVE-2026-63017 Incorrect authorization in PowerSYSTEM Center allows a low-privileged, authenticated user to access resources normally limited to administrators. Read More 3 Affected Products Subnet Solutions PowerSYSTEM Center 2024 >=6.0.x|<=6.2.x Product Status: known_affected Remediations Mitigation For users who are currently using PowerSYSTEM Center 2024, Subnet Solutions recommends users upgrade to PowerSYSTEM Center 2026 Update 1.1. For assistance in upgrading, users should contact the Subnet Solutions System Integrat...

Fixed kernels for a use-after-free vulnerability in the Linux kernel's IPv4 TCP code are now available for Red Hat Enterprise Linux 8, 9, and 10, while Ubuntu's fixes for its three newest long-term-support releases remain in its opt-in testing channel with no date for a regular update. The flaw, tracked as CVE-2026-98432, can be reached by a remote, unauthenticated attacker and can

HTTP2Shell (CVE-2026-111497), the critical Brotli bug first known as Node2Shell, is a remote code execution flaw in the compression library inside Node.js, Bun, Envoy, Python and more. AI found it: OpenAI’s agents turned it up in late September during a high-compute red-teaming campaign. Finding bugs is getting faster. Fixing them isn’t. HTTP2Shell shows why that gap matters, and how Sweet Virtual Patching protects running applications until the fixes land. A bad stream, a broken decoder … More → The post Product showcase: Sweet Virtual Patching stops HTTP2Shell while fixes catch up appeared first on Help Net Security .

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Quest Foglight for Databases. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 9.8. The following CVEs are assigned: CVE-2026-92188.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Quest Foglight for Databases. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 9.8. The following CVEs are assigned: CVE-2026-92189.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Cisco Snort. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 9.8. The following CVEs are assigned: CVE-2026-20043.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Quest Foglight for Databases. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 9.8. The following CVEs are assigned: CVE-2026-92190.

A maximum-severity security flaw impacting Siemens SIMATIC IoT2050 Advanced devices has come under active exploitation, VulnCheck has revealed. The vulnerability, tracked as CVE-2026-58115 (CVSS score: 10.0), is a case of missing authentication for a critical function that could be exploited by an unauthenticated remote attacker to run arbitrary code. "SIMATIC IoT2050 Advanced devices running

Threat actors are attempting to exploit an unpatched maximum-severity security vulnerability in the CryptoPayment Gateway WordPress plugin, according to findings from Defused Cyber. The vulnerability in question is CVE-2026-81648, which carries a CVSS score of 10.0. Successful exploitation of the flaw could permit unauthenticated users to delete arbitrary files on the server and extract

CISA added two new Ivanti Connect Secure vulnerabilities (CVE-2026-111357, CVE-2026-118527) to its Known Exploited Vulnerabilities catalog on Friday, after Ivanti updated an earlier security advisory with details about the flaws. Three flaws chained to gain a foothold CVE-2026-111357, a missing authentication for a critical function vulnerability that allows a local authenticated attacker to escalate their privileges, and CVE-2026-118527, a “Generation of Predictable Numbers or Identifiers Vulnerability” that makes remote authenticated file upload possible, have been … More → The post CISA to federal agencies: Remediate exploited Ivanti Connect Secure vulnerabilities (CVE-2026-111357, CVE-2026-118527) appeared first on Help Net Security .

Over 1,000 Internet-exposed GitLab servers are still unpatched against a maximum-severity flaw actively exploited in remote code execution attacks. [...]

A critical flaw in Canonical's LXD and MicroCloud let an attacker log in as a trusted client without holding that client's private key. To do it, the attacker had to reach their HTTPS API over the network and have the trusted client's public certificate. Once in, the attacker would act as that client, with access to the cluster and its virtual machines. If the impersonated account is

Drupal warns that attackers are exploiting a critical authorization flaw in Commerce Core, putting vulnerable online stores at risk. Drupal warns that threat actors are exploiting a highly critical security flaw, tracked as CVE-2026-118539, in its Commerce Core module. The vulnerability is caused by missing authorization checks. “This module enables you to sell goods and […]

A malicious ChatGPT share link could run an attacker's code in the logged-in session of anyone who opened it, allowing them to read their private conversations, researchers at the security firm Parameter showed. The researchers reported the flaw through OpenAI's bug bounty program on October 18, and OpenAI fixed it eight days later and rated it P1, its most serious category.

Security researchers at Anthropic have developed an exploit for a critical Linux kernel vulnerability that allows unauthenticated attackers to remotely execute commands as root on servers running Multipath TCP (MPTCP) listeners. [...]

U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds GitLab and Cisco flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added GitLab and Cisco vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog: Below are the flaws added to the catalog: CVE-2026-97229 is a critical security flaw that could let attackers run code on […]

A vulnerability in TeamViewer could let attackers run code on an IT support technician’s computer when the technician…

Attackers have started exploiting a maximum-severity GitLab vulnerability patched earlier this month, according to the US Cybersecurity and Infrastructure Security Agency (CISA). [...]

Drupal warned admins to patch a critical access bypass vulnerability in the Commerce Core module that attackers are exploiting in the wild. [...]

Drupal has warned that threat actors are exploiting a "highly critical" security flaw in its Commerce Core component. The vulnerability, tracked as CVE-2026-118539 (CVSS score: N/A), is a case of missing authorization affecting Commerce Core versions from 0.0.0 to 2.41 and from 3.0.0 to 3.3.13. "This module enables you to sell goods and services to customers through an included shopping cart

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added two security flaws impacting Cisco and GitLab software to its Known Exploited Vulnerabilities (KEV), citing evidence of active exploitation. The vulnerabilities are listed below - CVE-2026-97229 (CVSS score: 10.0) - An integer overflow or wraparound vulnerability in GitLab Community Edition and Enterprise

Attackers Can Exploit ICMP Error Handling Before Operating System Protections Load A critical buffer overflow in TianoCore's EDK II UEFI firmware, tracked as CVE-2026-97631, could let unauthenticated attackers execute code during PXE network boot before OS security checks begin, exposing systems to pre-boot compromise despite an upstream source fix.

Some attacks take real skill. Others just need someone to leave a door open. This week has both. Exposed passwords, old bugs still getting exploited, and trusted software doing things it shouldn't. There's a strange mix of clever tricks and careless mistakes. Hackers are borrowing trust from familiar apps, websites, and AI tools. Some are using AI to speed things up. Others are leaving their

A newly identified advanced persistent threat (APT) group tracked as UAT-11473 was observed exploiting CVE-2026-20127, an authentication-bypass flaw in Cisco Catalyst SD-WAN Controllers, to deploy a custom malware framework called KeyDrift. [...]