Friday, December 19, 2025 Archive

Archived Security Snapshot

Critical vulnerabilities, curated daily for security professionals

Archived Security Brief

Friday's vulnerability disclosures include 25 critical CVEs, up 19% from Thursday's 21 critical issues. High-priority vulnerabilities increased significantly to 100 entries, a 49% rise from yesterday's 67. Sixteen actively exploited vulnerabilities require attention, including CVE-2025-20393 affecting Cisco products with a CVSS 10 score, CVE-2025-59718 targeting Fortinet systems, and CVE-2025-6218 impacting RARLAB WinRAR. Notable critical disclosures include CVE-2025-65041 (CVSS 10) affecting Microsoft Partner Center authorization and CVE-2025-65037 (CVSS 10) involving code generation flaws across multiple products. Patch availability stands at 0%, requiring compensating controls across affected systems.

  • 25 critical CVEs disclosed, 19% increase from Thursday's count of 21
  • 100 high-priority vulnerabilities, up 49% from yesterday's 67 entries
  • 16 actively exploited CVEs including Fortinet, Cisco, SonicWall, and WinRAR products
  • 0% patch availability requires immediate compensating control deployment
  • Android Framework, Microsoft Windows, and Google Chromium among targeted platforms

Immediate action: Prioritize network segmentation and access controls for Fortinet, Cisco, and SonicWall appliances given active exploitation and zero patch availability. Implement application whitelisting and restrict file upload functionality for systems affected by CVE-2025-64231 and CVE-2025-53433. Weekend staffing should include monitoring for exploitation attempts against WinRAR and Chromium vulnerabilities.

How to read this brief

CVSS score (e.g. 9.1) — severity from 0–10. Red marks critical (9+), orange high (7–8.9).

Exploitability — how hard the flaw is to attack, read from the CVSS vector:

  • Network / Adjacent / Local / Physical — how close an attacker must get. Network means reachable over the internet.
  • No / Low / High privileges — the access they need first. No privileges means no login required.
  • No interaction / User interaction — whether a victim has to do something (open a file, click a link). No interaction means fully automatable.

The lower the bar on all three, the easier to exploit at scale — “Network · No privileges · No interaction” is the worst case: hit from anywhere, no credentials, no victim action.

Actively exploited — confirmed under attack in the wild (CISA’s Known Exploited Vulnerabilities catalog). Prioritize these regardless of score.

EPSS · Nth percentile — FIRST.org’s estimated chance a flaw is exploited within 30 days. We flag it only in the top 10% — a statistical signal it’s unusually likely to be targeted, separate from whether attacks are confirmed.

💡 Tip: Swipe CVE cards left to ⭐ star, right to ❌ remove

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