Saturday, December 27, 2025 Archive

Archived Security Snapshot

Critical vulnerabilities, curated daily for security professionals

Archived Security Brief

Yesterday's disclosures included 4 critical vulnerabilities (CVSS 9.0+), a notable increase from zero critical issues the prior day. High-priority CVEs decreased 76% to 23 from the previous day's 95. Eleven actively exploited vulnerabilities remain on the CISA KEV list, including CVE-2025-66644 affecting Array Networks ArrayOS AG, CVE-2025-6218 in RARLAB WinRAR, and CVE-2025-62221 targeting Microsoft Windows. Notable critical disclosures include CVE-2025-66203 (CVSS 9.9) in StreamVault video download integration, CVE-2025-68668 (CVSS 9.9), and CVE-2025-13915 (CVSS 9.8) affecting IBM API Connect. Patch availability stands at 0%, requiring organizations to implement compensating controls until vendor fixes become available.

  • 4 critical vulnerabilities disclosed, up from 0 the prior day
  • 23 high-priority CVEs, a 76% decrease from 95 the previous day
  • 11 actively exploited vulnerabilities including D-Link Routers, Microsoft Windows, Google Chromium, and Apple products
  • 0% patch availability for disclosed vulnerabilities
  • IBM API Connect, StreamVault, Array Networks, and WinRAR among affected products

Immediate action: Priority review is recommended for organizations using IBM API Connect, Array Networks ArrayOS AG, RARLAB WinRAR, and Microsoft Windows systems. With no patches currently available, implement network segmentation and enhanced monitoring for affected products while awaiting vendor updates.

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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