All news with #advisory tag

⚠️ Microsoft confirmed that the KB5070311 preview update can cause a brief bright white flash when launching File Explorer in dark mode on Windows 11 systems. The behavior is also triggered when navigating to or from Home or Gallery, creating a new tab, toggling the Details pane, or selecting 'More details' while copying files. Microsoft says it is working on a solution but has not provided a timeline; affected users are advised to disable dark mode as a temporary workaround.

🔧 Microsoft is addressing a bug that prevents some users from opening Excel email attachments in the new Outlook client when filenames contain non‑ASCII characters. The company says the root cause is a missing encoding in the file‑open requests and that a fix has been developed and deployed for validation. While the rollout is still in progress, affected users are advised to use Outlook on the web or download the file to open it locally as a temporary workaround.

⚠️ Microsoft has announced that WINS will be unsupported after the lifecycle of Windows Server 2025 on the LTSC channel, creating an effective sunset in 2034. The deprecated NetBIOS-era name service, long superseded by DNS, remains in place in many environments, especially industrial and OT systems. Administrators are urged to inventory dependencies, plan migrations to DNS, or isolate legacy workloads to reduce security and operational risk.

🔒 Microsoft warned that updates to Windows 11 released since August may make the password sign‑in icon invisible on the lock screen for systems with multiple sign‑in options. The button remains functional — hovering over the blank space reveals the password control. The issue is tied to the non‑security preview KB5064081 and later releases on 24H2/25H2. Microsoft has provided no timeline for a fix and offers no workaround beyond the hover action.

📧 Darktrace warns of a major increase in Black Friday-themed phishing, reporting a 620% spike in the weeks before the 2025 sales and forecasting a further 20–30% rise during Black Friday week. The firm highlights three primary tactics: brand impersonation, fake marketing domains and generative AI-generated adverts. Amazon was the most impersonated brand, and other US retailers were also targeted. Consumers are advised to verify senders and avoid clicking suspicious links.

🔔 CISA has added CVE-2021-26829 — a cross-site scripting vulnerability in OpenPLC ScadaBR — to its Known Exploited Vulnerabilities Catalog based on evidence of active exploitation. Cross-site scripting is a frequent attack vector that can enable data theft, session hijacking, and unauthorized actions, posing significant risks to the federal enterprise. Under BOD 22-01, Federal Civilian Executive Branch agencies are required to remediate KEV-listed flaws by the specified due date; CISA also strongly urges all organizations to prioritize timely remediation. CISA will continue to update the catalog as new threats meet its criteria.

🔔 The FCC has warned that attackers have been hijacking US radio transmission equipment to broadcast false Emergency Alert System tones and obscene material, exploiting unsecured Barix network audio devices. Intruders reconfigured devices to pull attacker-controlled streams, causing stations in Texas and Virginia to air unauthorized Attention Signals layered with offensive language. The FCC urged broadcasters to apply vendor patches, change default credentials, isolate EAS and Barix devices behind firewalls or VPNs, monitor logs, and report incidents to manufacturers, the FCC Operations Center and IC3.

🔒 Cisco Talos disclosed multiple vulnerabilities across Dell ControlVault, the Entr'ouvert Lasso SAML library, and the GL.iNet Slate AX travel router. Issues range from a hard-coded password and privilege escalation in ControlVault to memory corruption and buffer overflows that can enable arbitrary code execution, a type confusion bug and DoS in Lasso, and an OTA firmware downgrade in GL.iNet. Vendors have issued patches under Cisco’s disclosure policy and Snort rule updates are available to detect exploitation. Administrators should apply vendor updates, verify OTA integrity mechanisms, and deploy IDS signatures promptly.

🔒 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.

🔒 Since January 2025 the FBI reports account takeover (ATO) schemes have produced losses exceeding $262 million. Cybercriminals impersonate bank, payroll and health account providers and use phishing domains, SEO poisoning and social engineering to harvest credentials and one-time codes. The Bureau recommends enabling MFA, using unique complex passwords, monitoring accounts regularly, avoiding search ads and verifying unsolicited calls or messages before sharing any login information.

🔐 The FBI warns that cybercriminals impersonating banks and payment services have caused over $262 million in losses this year through account takeover (ATO) fraud and more than 5,100 complaints. Attackers use phishing, SEO poisoning, calls and SMS to harvest credentials and MFA/OTP codes, then transfer funds to intermediary accounts and convert proceeds to cryptocurrency. The advisory highlights growing use of AI-generated phishing and holiday-themed scams and urges vigilance, unique passwords, URL checks and stronger authentication.

🛡️Huntress warns of an evolved ClickFix campaign that uses a convincing full‑screen Windows Update splash and steganographic PNGs to trick employees into pasting and running commands. Those commands deliver loaders that in turn deploy LummaC2 and Rhadamanthys infostealers. The firm reports a 313% increase in ClickFix incidents over six months and noted multiple active lure domains even after the Nov 13 Operation Endgame takedown. Primary mitigation advice is to disable the Windows Run dialog via Registry or GPO and pair user awareness with endpoint monitoring and EDR.

🔍 AWS published behavioral guidelines for network scanning to help legitimate scanners distinguish themselves from malicious actors when probing AWS IP space. The guidance defines four pillars—observational, identifiable, cooperative, and confidential—and gives practical examples (non‑mutating checks, reverse DNS, meaningful user‑agents, opt‑out mechanisms). Conforming scanners should limit impact, secure collected data, and respect opt‑out requests to reduce abuse reports and improve internet security.

⚠️ The FBI warns that cybercriminals impersonating bank and payroll support teams have stolen over $262 million in account takeover (ATO) fraud since January 2025, with more than 5,100 complaints reported to the Internet Crime Complaint Center. Attackers use calls, texts, phishing sites and SEO‑poisoned search results to harvest credentials and MFA/OTP codes, then quickly wire funds to crypto wallets and lock owners out. The FBI advises monitoring accounts, using unique complex passwords, enabling MFA, bookmarking official banking sites, contacting financial institutions immediately to request recalls and indemnification, and filing detailed complaints with IC3.

🔔 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.

⚠️ Grafana Labs has disclosed a maximum-severity vulnerability (CVE-2025-41115) in Grafana Enterprise that can allow new SCIM-provisioned users to be treated as administrators or used for privilege escalation. The flaw is only exploitable when SCIM provisioning is enabled and both the 'enableSCIM' feature flag and 'user_sync_enabled' option are true, because numeric SCIM externalId values were mapped directly to internal user.uid values. Affected self-managed Enterprise releases include 12.0.0 through 12.2.1; administrators should upgrade to a patched release (12.3.0, 12.2.1, 12.1.3, or 12.0.6) or disable SCIM. Grafana Cloud and managed services have already received patches.

🔒 Grafana has released security updates to address a maximum-severity flaw (CVE-2025-41115) in its SCIM provisioning component that can enable user impersonation or privilege escalation under specific configurations. The issue allows a malicious or compromised SCIM client to provision a user with a numeric externalId that may be mapped to an internal user ID. It affects Grafana Enterprise 12.0.0–12.2.1 and was fixed in 12.0.6+security-01, 12.1.3+security-01, 12.2.1+security-01 and 12.3.0. Grafana discovered the bug during an audit on November 4, 2025 and urges immediate patching.

🔒 CISA added one vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog: CVE-2025-61757, a Missing Authentication for Critical Function issue affecting Oracle Fusion Middleware. The entry was added based on evidence of active exploitation and is identified as a common attack vector that poses significant risk to the federal enterprise. Under BOD 22-01, Federal Civilian Executive Branch agencies must remediate KEV entries by the specified due date; CISA strongly urges all organizations to prioritize timely remediation and other risk-reduction measures.

⚠️ CISA released six Industrial Control Systems (ICS) Advisories on 20 November 2025 to inform operators and administrators about current security issues, vulnerabilities, and potential exploits affecting ICS products. The advisories cover affected products including Automated Logic WebCTRL Premium Server, ICAM365 CCTV camera models, Opto 22 GRV‑EPIC/GRV‑RIO, Festo MSE6 and Festo Didactic lines, and Emerson Appleton UPSMON‑PRO. Administrators are encouraged to review each advisory for technical details and mitigations and to apply vendor guidance promptly to reduce operational and safety risk.

🔒 Fortinet's FortiWeb appliances are affected by a critical vulnerability tracked as CVE-2025-64446 that researchers say was exploited in the wild before an official advisory. The issue chains a relative path traversal to an internal CGI backend with an HTTP_CGIINFO header authentication bypass that allows unauthenticated admin impersonation and potential remote code execution. Fortinet released fixes in multiple 7.x and 8.x maintenance updates and recommends disabling HTTP/HTTPS on internet-facing management interfaces if upgrades cannot be applied immediately.