All news in category “Security Advisory and Patch Watch”

🔒 Microsoft warned that FIDO2 security keys may prompt users to create or enter a PIN after Windows updates beginning with the September 29, 2025 KB5065789 preview. This behavior affects devices running Windows 11 24H2 or 25H2 when a Relying Party or identity provider requests User Verification set to preferred. Microsoft says the change is intentional to align with the WebAuthn specification, which requires PIN setup when authenticators support user verification. Organizations that want to avoid PIN prompts can set user verification to discouraged in their WebAuthn settings.

⚠️ASUS has released firmware updates to remediate nine vulnerabilities, including a critical authentication bypass (CVE-2025-59366) affecting routers with AiCloud enabled. The flaw is caused by an unintended Samba side effect and can be exploited by unauthenticated remote attackers chaining a path traversal and an OS command injection in low-complexity attacks. Users should apply the provided firmware (3.0.0.4_386, 3.0.0.4_388, 3.0.0.6_102) immediately or follow ASUS mitigation guidance for end-of-life models.

⚠️Security researchers at Cato Networks disclosed HashJack, a novel indirect prompt-injection vulnerability that abuses URL fragments (the text after '#') to deliver hidden instructions to AI browsers. Because fragments never leave the client, servers and network defenses cannot see them, allowing attackers to weaponize legitimate websites without altering visible content. Affected agents included Comet, Copilot for Edge and Gemini for Chrome, with some vendors already rolling fixes.

🔒 Ashlar-Vellum has released updates addressing two vulnerabilities—an Out-of-Bounds Write (CVE-2025-65084) and a Heap-based Buffer Overflow (CVE-2025-65085)—affecting Cobalt, Xenon, Argon, Lithium, and Cobalt Share up to version 12.6.1204.207. Both flaws could allow local attackers to disclose information or execute arbitrary code; vendor updates to 12.6.1204.208 or later are available. CISA assigns a CVSS v4 base score of 8.4, notes low attack complexity, and reports no known public exploitation; these issues are not remotely exploitable.

🔒 Rockwell Automation has released an update for Arena Simulation to address a stack-based buffer overflow (CWE-121) in the parsing of DOE files that could allow local attackers to execute arbitrary code. The issue, tracked as CVE-2025-11918 (CVSS v4 7.1), affects versions 16.20.10 and earlier and requires opening a malicious DOE file. Rockwell fixed the vulnerability in 16.20.11; users should upgrade or apply recommended mitigations to reduce exposure.

⚠️ Zenitel has disclosed multiple high‑severity vulnerabilities in the TCIV-3+ intercom device, including three OS command injection flaws, an out‑of‑bounds write, and a reflected XSS. The issues (CVE-2025-64126 through CVE-2025-64130) carry high CVSS ratings — several are scored CVSS v4 10.0 — and can be exploited remotely with low complexity. Zenitel advises upgrading to version 9.3.3.0 or later; CISA recommends isolating devices, minimizing Internet exposure, and applying defensive controls until patches are deployed.

⚠️ SiRcom SMART Alert (SiSA) version 3.0.48 contains a Missing Authentication for Critical Function vulnerability that allows unauthenticated access to backend APIs and bypass of the login screen using browser developer tools. Assigned CVE-2025-13483, the issue has a CVSS v3.1 base score of 9.1 and a CVSS v4 base score of 8.8. Exploitation could enable remote activation or manipulation of emergency sirens, and CISA reports no vendor coordination; network isolation and secure remote access are recommended.

⚠️ Festo has disclosed two critical vulnerabilities affecting multiple Compact Vision System, control block, controller, and operator unit products, with CVSS ratings up to 9.8. One issue stems from an insecure default that allows remote, unauthenticated access if passwords are not enabled; the other permits an authenticated attacker to read or modify configuration files. Festo and CERT@VDE recommend enabling password protection, using online user management where applicable, and minimizing network exposure of affected devices.

🔔 CISA released seven new Industrial Control Systems advisories addressing vulnerabilities across multiple vendors and product families. The advisories cover Ashlar-Vellum, Rockwell Automation, Zenitel, Opto 22, Festo, SiRcom, and an update for Mitsubishi Electric FA engineering software. Administrators are urged to review technical details and apply recommended mitigations promptly.

🔒 CISA warns that Opto 22's groov View API exposes API keys and user metadata through a users endpoint that returns keys for all accounts to any principal with an Editor role. The issue affects groov View Server for Windows R1.0a–R4.5d and GRV‑EPIC‑PR1/PR2 firmware prior to 4.0.3. Successful exploitation could disclose credentials, reveal keys, and enable privilege escalation; Opto 22 has released patches and recommends upgrading to Server R4.5e and firmware 4.0.3 alongside network-level mitigations.

⚠️ Fluent Bit, a widely deployed log-processing agent used across containers, Kubernetes DaemonSets, and major cloud platforms, contains multiple critical vulnerabilities that can enable authentication bypass, arbitrary file writes, and full agent takeover. Oligo Security, in cooperation with AWS, disclosed five severe flaws impacting in_forward authentication and the tag-handling logic, plus path traversal and buffer-overflow defects. The project has released patches in v4.1.1 and v4.0.12; operators should update and validate configurations immediately to prevent log tampering, telemetry rerouting, and potential remote code execution.

🔐CISA warns that threat actors are actively using commercial spyware and remote-access trojans to target users of mobile messaging apps, combining technical exploits with tailored social engineering to gain unauthorized access. Recent campaigns include abuse of Signal's linked-device feature, Android spyware families ProSpy, ToSpy and ClayRat, a chained iOS/WhatsApp exploit (CVE-2025-43300, CVE-2025-55177) targeting a small number of users, and a Samsung flaw (CVE-2025-21042) used to deliver LANDFALL. CISA urges high-value individuals and organizations to adopt layered defenses: E2EE, FIDO phishing-resistant MFA instead of SMS, password managers, device updates, platform hardening (Lockdown Mode, iCloud Private Relay, app-permission audits, Google Play Protect), and to prefer modern hardware from vendors with strong security records.

⚠️ Researchers disclosed five vulnerabilities in Fluent Bit, the open-source telemetry agent, that can be chained to bypass authentication, write or overwrite files, execute code, corrupt logs, and cause denial-of-service conditions. CERT/CC noted many issues require network access, and fixes were released in Fluent Bit 4.1.1 and 4.0.12 with AWS participating in coordinated disclosure. Operators are urged to update immediately and apply mitigations such as avoiding dynamic tags, mounting configs read-only, and running the agent as a non-root user.

⚠️ Fluent Bit, a widely deployed telemetry agent, has multiple critical vulnerabilities disclosed by Oligo Security affecting inputs, tag processing and output handling. Patches are available in Fluent Bit v4.1.1 and v4.0.12 released in early October 2025; older releases remain at risk. Operators are advised to update immediately, avoid dynamic tags, lock down output file parameters, run with least privilege and mount configuration directories read-only to reduce exposure.

📱 CISA warns that multiple cyber threat actors are actively using commercial spyware to target users of mobile messaging applications. These actors employ phishing, malicious device-linking QR codes, zero-click exploits, and impersonation of platforms such as Signal and WhatsApp to gain unauthorized access and deploy additional malicious payloads. CISA urges users to review updated mobile communications guidance and mitigations to reduce spyware risk.

⚠️ The Cybersecurity and Infrastructure Security Agency (CISA) added a critical pre-authenticated remote code execution flaw in Oracle Identity Manager (CVE-2025-61757) to its Known Exploited Vulnerabilities catalog after active exploitation was observed. Searchlight Cyber reported that a flawed authentication filter combined with matrix/query parameters lets attackers bypass auth and reach a Groovy compile endpoint, enabling RCE through compile-time annotation processing. Oracle fixed the issue in its October 2025 Critical Patch Update; federal agencies must remediate by December 12, 2025.

🔴 Oracle Identity Manager is affected by a critical unauthenticated remote code execution flaw, CVE-2025-61757, impacting versions 12.2.1.4.0 and 14.1.2.1.0. Disclosed by Searchlight Cyber on 20 November and reported by Oracle on 21 November, the bug was added to the CISA KEV catalog the same day. The issue resides in the REST WebServices component and carries a CVSS score of 9.8, enabling HTTP access to execute arbitrary code and potentially allowing full takeover. CISA urges immediate patching or isolation of affected services from the public internet.

⚠️ Microsoft confirmed a Windows 11, version 24H2 bug in cumulative updates released since July 2025 that causes XAML dependency packages not to register in time, leading Explorer, StartMenuExperienceHost, ShellHost.exe and other shell components to crash or fail to initialize. Microsoft provided three PowerShell Add-AppxPackage commands as a temporary workaround and says a restart is required after running them. Organizations using non-persistent VDI should run a logon script to provision the packages before Explorer launches; a permanent fix is in development with no timeline.

🛡️ A recently patched WSUS deserialization flaw, CVE-2025-59287, has been weaponized to install the ShadowPad backdoor on Windows servers. AhnLab's ASEC reports attackers used PowerCat to spawn a CMD shell and then leveraged certutil and curl to retrieve payloads from 149.28.78.189:42306. ShadowPad was deployed via DLL side-loading of ETDApix.dll by ETDCtrlHelper.exe and runs as an in-memory loader with plugin support, anti-detection, and persistence.

⚠️ CISA has added CVE-2025-61757 to its Known Exploited Vulnerabilities (KEV) catalog following reports of active exploitation targeting Oracle Identity Manager. The flaw, a missing-authentication issue with a CVSS score of 9.8, affects versions 12.2.1.4.0 and 14.1.2.1.0 and was addressed in Oracle's recent quarterly updates. Searchlight Cyber researchers demonstrated that an allow-list bypass using URI tricks such as ?WSDL or ;.wadl can expose protected API endpoints and enable pre-authenticated remote code execution via the groovyscriptstatus endpoint. Federal civilian agencies must apply the patch by December 12, 2025.