All news in category “Security Advisory and Patch Watch”

🛡️ Security researchers from Noma Labs disclosed a critical vulnerability in the Context7 MCP Server used by Upstash to deliver library documentation to AI coding assistants. The flaw, named ContextCrush, allowed unfiltered "Custom Rules" to be served directly to AI agents, enabling malicious instructions to be executed within developers' environments. Context7 is widely used—boasting around 50,000 GitHub stars and over 8 million npm downloads—and integrates with assistants such as Cursor, Claude Code and Windsurf, increasing potential exposure. Upstash deployed rule sanitisation and additional safeguards after disclosure; there is no evidence of active exploitation.

🔐 Researchers at Google's Threat Intelligence Group disclosed the Coruna exploit kit, a complex toolkit that compromises Apple iPhones running iOS 13.0 through 17.2.1 using multiple chained vulnerabilities. The framework contains five full exploit chains and 23 distinct flaws, and includes device fingerprinting, automatic WebKit exploit selection and mitigation bypasses. A final-stage loader called PlasmaLoader focuses on extracting financial data such as QR codes and cryptocurrency recovery phrases. Google recommends updating to the latest iOS release or enabling Lockdown Mode when updates aren’t possible.

🛡️ An Out‑of‑Bounds Write vulnerability in the DOPSoft DPAX parser of CNCSoft‑G2 (CVE‑2026‑3094) can lead to remote code execution on affected devices. The flaw affects versions prior to V2.1.0.39 and has a CVSS v3.1 score of 7.8 (High). Although exploitation requires local access and is not remotely exploitable, Delta recommends updating to V2.1.0.39 to remediate the issue and CISA advises reducing network exposure and following ICS security best practices.

🔔 CISA has added five vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog based on evidence of active exploitation. The new entries affect Hikvision, Rockwell, and multiple Apple products and include CVE-2017-7921, CVE-2021-22681, CVE-2021-30952, CVE-2023-41974, and CVE-2023-43000. Under BOD 22-01 Federal Civilian Executive Branch agencies must remediate listed CVEs by the required due dates; CISA strongly urges all organizations to prioritize timely remediation to reduce exposure to common attack vectors.

⚠️ Ox Security has disclosed a zero-click remote code execution (RCE) vulnerability affecting FreeScout, tracked as CVE-2026-28289 (Mail2Shell), which bypasses an earlier fix (CVE-2026-27636). By sending a single crafted email to any address configured in FreeScout, an attacker can execute code on the server without authentication and without any user interaction. Ox warned thousands of instances may be exposed and urged immediate upgrades to v1.8.207 or later. Administrators are also advised to disable AllowOverrideAll in Apache on affected servers.

🔔 Cisco has warned that two additional Catalyst SD-WAN Manager vulnerabilities — a high-severity arbitrary file overwrite (CVE-2026-20122) and a medium-severity information disclosure flaw (CVE-2026-20128) — are being actively exploited. The file-overwrite vulnerability can be triggered remotely by attackers with valid read-only API credentials; the information-disclosure issue requires local vManage credentials. Cisco says the flaws affect the software regardless of device configuration and urges administrators to upgrade to fixed releases immediately.

🔒 Cisco has published 25 joint advisories addressing 48 vulnerabilities across its Secure Firewall ASA, Secure FMC and FTD product lines. The two most critical flaws, CVE-2026-20079 and CVE-2026-20131, are rated CVSS 10 and impact Secure FMC, enabling authentication bypass and remote code execution respectively. The auth bypass can be triggered with crafted HTTP requests against a boot-created system process, while the RCE stems from insecure deserialization of a user-supplied Java byte stream to the web management interface. There are no workarounds; Cisco urges customers to install the fixed software and the bundle also addresses 15 high and 31 medium severity issues.

⚠️ A newly disclosed maximum-severity flaw, CVE-2026-28289, enables zero-click remote code execution against FreeScout by defeating filename validation. Researchers at OX Security found that inserting a zero-width space (U+200B) before a filename bypasses the prior patch, allowing an attacker to upload a .htaccess-style payload that is later processed as a dotfile. The uploaded file can be reached via the platform's /storage/attachment/ path and used to execute commands without authentication. FreeScout 1.8.207 fixes the bypass; admins should update immediately and consider disabling AllowOverrideAll in Apache.

🔧 Microsoft released KB5075039 to repair a Windows 10 Recovery Environment (WinRE) startup failure caused by the October update KB5068164. The patch restores WinRE access for affected systems. Installation requires the WinRE partition to be at least 256 MB; administrators should back up drives before resizing partitions and follow Microsoft's manual resizing instructions.

🔒 Cisco has released updates for two maximum-severity vulnerabilities in Cisco Secure FMC that allow unauthenticated remote attackers to obtain root on affected systems. CVE-2026-20079 is an authentication-bypass flaw exploitable via crafted HTTP requests to gain root, while CVE-2026-20131 is a remote code execution vulnerability triggered by a crafted serialized Java object that can execute arbitrary Java code as root. Cisco also patched dozens of other issues and says its PSIRT has no evidence these flaws are being actively exploited.

⚠️ CISA has added a high‑severity VMware Aria Operations flaw, CVE-2026-22719, to its Known Exploited Vulnerabilities (KEV) catalog after reports of active exploitation; the issue is an unauthenticated command injection that can allow arbitrary command execution and potential remote code execution. Broadcom released fixes for VMware Cloud Foundation, vSphere Foundation 9.0.2.0 and Aria Operations 8.18.6, and provided a shell-script workaround (aria-ops-rce-workaround.sh) for appliance nodes. Public details of in‑the‑wild exploitation and attribution remain scarce. Federal civilian agencies must apply the fixes by March 24, 2026.

🚨 CISA has added a VMware Aria Operations command injection flaw (CVE-2026-22719) to its Known Exploited Vulnerabilities catalog and is treating the issue as exploited in attacks. Broadcom says it is aware of reports of exploitation but cannot independently confirm them. VMware released patches on February 24 and provided a temporary workaround script (aria-ops-rce-workaround.sh) that disables vulnerable migration components; administrators should apply the updates or the workaround immediately.

🔗 Microsoft warns attackers are abusing a legitimate OAuth redirect behavior to send victims from trusted identity-provider endpoints—like Microsoft Entra ID and Google Workspace—to attacker-controlled landing pages. Phishing lures such as e-signature requests, HR notices, Teams invites and password resets embed links that point to real authorization endpoints but use broken parameters (for example, prompt=none plus invalid scopes) so the provider silently redirects to a malicious URI. Microsoft has disabled multiple malicious OAuth apps, published client IDs and initial redirect IOCs, and supplied KQL hunting queries for Defender XDR customers. Analysts say the old advice to “hover and check the link” is no longer sufficient and urge validating context and tightening OAuth governance.

🔒 CISA warns that ePower epower.ie charging stations contain multiple WebSocket authentication and session-management vulnerabilities that could allow attackers to impersonate chargers, hijack sessions, or disrupt charging services. The advisory catalogs four CVEs, led by a critical authentication bypass (CVE-2026-22552, CVSS 9.4). ePower has not responded to CISA's coordination requests; operators should apply recommended mitigations and minimize network exposure.

🔒 Hitachi Energy disclosed multiple vulnerabilities in the RTU500 series CMU firmware that may reveal limited user-management data or cause device outages. The issues span improper permission handling, input validation gaps, uncontrolled recursion, and unbounded memory allocation, with CVSS scores up to 7.5. Vendor fixes are available — update to CMU Firmware 12.7.8, 13.7.8 (or later), or 13.8.2 as applicable — and apply recommended network mitigations until devices are patched.

⚠️ CISA added two vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog on March 3, 2026, after observing evidence of active exploitation. The entries include CVE-2026-21385, a memory corruption issue impacting multiple Qualcomm chipsets, and CVE-2026-22719, a command injection vulnerability affecting Broadcom VMware Aria Operations. Under BOD 22-01, Federal Civilian Executive Branch agencies must remediate cataloged flaws by the required due dates; CISA also strongly urges all organizations to prioritize timely remediation. CISA will continue to add vulnerabilities that meet its KEV criteria.

⚠️ Hitachi Energy disclosed authentication-based directory access vulnerabilities in the Relion REB500 product (firmware versions ≤ 8.3.3.0), tracked as CVE-2026-2459 and CVE-2026-2460. Authenticated users with certain roles can access and modify directories beyond their authorization. The vendor advises updating to REB500 v8.3.3.1 and recommends disabling or tightly controlling the Installer role as an interim mitigation.

⚠️ CISA warns of a high-severity driver vulnerability, CVE-2026-3437, in Portwell Engineering Toolkits v4.8.2 allowing a local authenticated user to read and write arbitrary memory. The flaw (CWE-119) can enable privilege escalation or denial-of-service, and carries a CVSS v3.1 base score of 8.8. Portwell has not responded to CISA coordination requests; users should minimize device exposure and contact Portwell support for guidance.

🔒 CISA reports multiple critical vulnerabilities in Everon OCPP Backends (api.everon.io) that permit unauthenticated access, session hijacking, credential exposure, and denial-of-service. The advisory details four CVEs, including a CVSS 3.1 score of 9.4 for missing authentication on WebSocket endpoints. Everon reportedly shut down the platform on December 1, 2025; CISA recommends isolating control networks, restricting Internet access, and using secure remote access methods.

⚠️ The Labkotec LID-3300IP ice detector contains an unauthenticated remote-access vulnerability (CVE-2026-1775) that allows an attacker to modify device parameters and execute operational commands by sending specially crafted packets. CISA assigns a CVSS v3.1 base score of 9.4 (Critical). Labkotec recommends migrating to the LID-3300IP Type 2, installing firmware V2.40, and enabling HTTPS; until remediation, operators should remove Internet exposure, segment networks, enforce strong credentials, and monitor device activity.