All news in category “Security Advisory and Patch Watch”

⚠️ Fortinet has issued updates to remediate a critical SQL injection vulnerability (CVE-2026-21643) in FortiClientEMS that could allow unauthenticated attackers to execute arbitrary code via specially crafted HTTP requests. The flaw is rated CVSS 9.1 and affects FortiClientEMS 7.4.4; Fortinet advises upgrading to 7.4.5 or later. Gwendal Guégniaud is credited with reporting the issue, and users are urged to apply the fixes promptly.

⚠️ Researchers report attackers exploiting critical SolarWinds Web Help Desk (WHD) remote code execution flaws (CVE-2025-40551 and CVE-2025-26399) to gain access to at least three organizations. After initial compromise the actor installed Zoho ManageEngine Assist and used Cloudflare tunnels alongside an outdated Velociraptor build as a command-and-control platform. The intruders disabled Defender and the Windows Firewall, deployed persistence mechanisms including scheduled tasks and SSH backdoors, and researchers advise upgrading WHD to 2026.1, removing public admin exposure, and rotating credentials.

⚠️LayerX disclosed a critical zero-click vulnerability affecting 50 Claude Desktop Extensions (DXT) that can result in remote code execution from a single crafted Google Calendar event. The flaw is possible because DXTs operate as unsandboxed MCP servers with full host privileges, allowing them to read files, run system commands and access credentials. LayerX rated the issue CVSS 10.0 and warned it could affect over 10,000 active users. Anthropic has declined to remediate, saying the scenario falls outside its current threat model.

⚠️BeyondTrust has issued an urgent advisory for a critical pre-authentication remote code execution vulnerability tracked as CVE-2026-1731 affecting Remote Support (≤25.3.1) and Privileged Remote Access (≤24.3.4). The flaw is an OS command injection discovered by Harsh Jaiswal and the Hacktron AI team and can be exploited by unauthenticated attackers without user interaction. BeyondTrust says cloud systems were secured by February 2, 2026 and advises on‑premises customers to upgrade to RS 25.3.2 or PRA 25.1.1 immediately.

🔒 BeyondTrust has released updates to address a critical pre-authentication remote code execution vulnerability affecting Remote Support and older Privileged Remote Access versions. The flaw, tracked as CVE-2026-1731, is an operating-system command injection rated 9.9 on the CVSS scale and allows unauthenticated attackers to execute OS commands in the context of the site user. Patches (BT26-02-RS and BT26-02-PRA) or upgrades to the fixed releases should be applied immediately, and self-hosted customers without automatic updates must apply the fix manually.

🔒 Tirith is an open-source, cross-platform tool that inspects pasted commands and blocks impostor attacks that rely on Unicode homoglyphs, invisible characters, and terminal injection techniques. It hooks into common shells (zsh, bash, fish, PowerShell), analyzes URLs and command patterns locally, and halts execution when suspicious input is detected. The author reports sub-millisecond overhead, no cloud or telemetry dependencies, and options to analyze commands without running them.

⚠️ Microsoft Defender observed in-the-wild exploitation of internet-facing SolarWinds Web Help Desk, enabling unauthenticated remote code execution and arbitrary command execution within the application context. Post-exploitation behaviors included PowerShell using BITS to download payloads, installation of ManageEngine RMM components for interactive control, credential theft via DLL sideloading and LSASS access, and persistence through scheduled tasks and reverse SSH/RDP tunnels. Organizations should patch WHD, restrict public admin access, hunt for unauthorized RMM artifacts, and rotate exposed service and admin credentials.

🔒 Security researchers at Upwind disclosed six vulnerabilities in n8n, four rated critical (CVSS 9.4), that enable remote code execution, command injection, arbitrary file access and cross-site scripting. The flaws target how n8n sandboxes user processes and protect the host, making multi-user and shared deployments especially dangerous. Administrators and developers should update to the latest release, audit extensions, and treat web-exposed instances with heightened caution.

⚠️ Germany's domestic intelligence agencies warn of suspected state-backed campaigns that hijack messaging accounts on Signal to target politicians, military officers, diplomats, and journalists. The attacks use social engineering rather than malware, abusing legitimate features such as QR-code pairing and SMS/PIN verification. Two variants are reported: a full account takeover and a silent device pairing that monitors chats and contacts. Authorities advise blocking/reporting support-like messages, enabling Registration Lock, and routinely checking linked devices.

⚠️ CISA warns that ransomware actors are actively exploiting CVE-2026-24423, a critical unauthenticated remote code execution vulnerability in SmarterTools SmarterMail via the ConnectToHub API. SmarterTools released a fix on January 15 (Build 9511) and issued further updates through Build 9526 on January 30. Agencies must apply updates or stop using the product by February 26, 2026, under KEV and BOD 22-01 guidance.

⚠ Four vulnerabilities were disclosed in the open source Ingress NGINX controller used in Kubernetes, with two rated CVSS 8.8. CVE-2026-1580 can enable authentication bypass when a misconfigured custom-errors backend ignores the X-Code header, and CVE-2026-24512 allows configuration injection via rules.http.paths.path, enabling code execution and secret disclosure. The other two issues pose lower or medium risks, including a potential DoS. Affected releases are 1.13.7 and below and 1.14.3 and below, and the only reliable mitigation is upgrading or migrating before Ingress NGINX reaches end of support.

🔒 Kaspersky has released a set of SIEM correlation rules to detect exploitation of FortiCloud SSO authentication bypasses in Fortinet products. The rules target activity related to CVE-2025-59718, CVE-2025-59719, and CVE-2026-24858, which allow an attacker with a FortiCloud account to access devices when SSO is enabled. The downloadable package ([OOTB] FortiCloud SSO abuse package – ENG) contains IOC, critical admin action, and suspicious activity rule groups; administrators should tune exceptions to reduce false positives and ensure Fortinet events are fully normalized with the "Extra" field populated for effective detection.

⚠️Orca Security researchers disclosed multiple attack vectors in GitHub Codespaces that can produce remote code execution simply by opening a malicious repository or pull request. By embedding commands in repository configuration files—specifically .vscode/tasks.json, .vscode/settings.json and .devcontainer/devcontainer.json—an attacker can execute code, exfiltrate tokens and access secrets without further user interaction. Microsoft confirmed the behavior is "by design" and points to trusted-repository controls to limit cross-environment impact.

⚠️ A critical vulnerability (CVE-2025-15080) affects Mitsubishi Electric MELSEC iQ-R Series firmware (R08/16/32/120PCPU) versions 48 and earlier. An attacker can read device data or parts of control programs, write device data, or cause a denial-of-service by sending specially crafted SLMP or proprietary protocol packets. Mitsubishi Electric recommends updating affected firmware to version 49 or later and, until patched, restricting access via firewalls, IP filters, VPNs, and LAN-only operation.

🔒 Hitachi Energy reported a critical vulnerability in FOX61x devices when configured to use remote RADIUS authentication. The RADIUS implementation is vulnerable to a chosen-prefix collision attack on the MD5 Response Authenticator, allowing an attacker able to manipulate responses to forge Access-Accept/Access-Reject/Access-Challenge messages and affect confidentiality, integrity, and availability. Affected versions include FOX61x R17A and earlier; update to R18 and enable the RADIUS Message-Authenticator on both the device and the RADIUS server. If immediate upgrade is not possible, segment FOX management traffic to reduce exposure.

⚠️ o6 Automation's Open62541 contains a heap out-of-bounds write in builds with PubSub and JSON enabled. A crafted JSON message can overwrite heap memory prior to authentication, reliably crashing the process and causing memory corruption. The vulnerability affects versions >=1.5-rc1 and <1.5-rc2 (CVE-2026-1301). Upgrade to v1.5.0 and apply network-access mitigations such as isolating control networks and restricting remote access to reduce exposure.

⚠️ CISA warns of multiple high‑severity vulnerabilities in Ilevia EVE X1 Server (≤ 4.7.18.0), including pre‑auth path traversal, unauthenticated OS command injection, plaintext credential exposure in logs, and reflected XSS. Successful exploitation can allow arbitrary shell execution and disclosure of sensitive files on critical manufacturing systems. Ilevia and CISA recommend updating the Ilevia Manager, closing TCP/8080, enforcing strong credentials, applying network segmentation, and monitoring for unauthorized access.

⚠️ CISA added two vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog: CVE-2025-11953 (React Native Community CLI OS command injection) and CVE-2026-24423 (SmarterTools SmarterMail missing authentication for critical function). The additions reflect evidence of active exploitation and elevated risk to the federal enterprise. Under BOD 22-01 federal agencies must remediate KEV entries by the due date. CISA strongly urges all organizations to prioritize timely remediation.

🔒 A vulnerability in the TP‑Link VIGI Series IP Camera local web interface allows an attacker on the same LAN to bypass authentication in the password recovery flow and reset the administrator password by manipulating client-side state. Successful exploitation grants full administrative access, compromising device configuration and network security. TP‑Link has released firmware updates and strongly recommends installing the latest builds; CISA advises isolating affected devices from public networks and using secure remote access such as updated VPNs.

⚠️ Hitachi Energy disclosed a critical vulnerability (CVE-2024-3596) affecting XMC20 devices that use remote RADIUS authentication. An MD5 Response Authenticator weakness permits a local attacker to forge or convert valid RADIUS responses (Access-Accept, Access-Reject, Access-Challenge), affecting confidentiality, integrity, and availability. Vendor guidance is to upgrade to XMC20 R18 and enable the RADIUS Message-Authenticator on both the device and the RADIUS server; where upgrades are not possible, segment FOX management traffic and apply network mitigations. CISA republishes the vendor advisory for visibility.