Thursday, February 26, 2026 Archive

Archived Security Snapshot

Critical vulnerabilities, curated daily for security professionals

Archived Security Brief

Thursday's vulnerability disclosures reveal 8 critical and 100 high-priority CVEs affecting major cloud providers, network infrastructure, and enterprise software. Critical CVE count dropped 62% from the prior day's 21, while high-priority disclosures rose 27% from 79 to 100. Notable critical vulnerabilities include CVE-2026-27597 (CVSS 10.0) in Enclave VM, CVE-2026-27702 (CVSS 9.9) exposing AWS keys, and CVE-2026-27941 (CVSS 9.9) in Google Cloud services. Microsoft Windows and Office products dominate the actively exploited landscape, with multiple confirmed exploitation chains targeting Windows kernel and Office components alongside a Cisco Catalyst SD-WAN vulnerability rated CVSS 10.0. No patches are currently available for the disclosed vulnerabilities, requiring organizations to prioritize compensating controls and network-level mitigations.

  • Enclave VM CVE-2026-27597 rated CVSS 10.0 — maximum severity with potential full system compromise
  • 8 critical CVEs disclosed, down 62% from prior day's 21, spanning AWS, Google Cloud, HP, and Acer products
  • 100 high-priority CVEs disclosed, up 27% from 79, indicating broadening attack surface across enterprise software
  • Cloud infrastructure and healthcare software heavily affected — AWS key exposure (CVE-2026-27702) and dual OpenEMR vulnerabilities (CVE-2026-24908, CVE-2026-24849) both at CVSS 9.9
  • 0% patch availability across all disclosed vulnerabilities — no vendor fixes currently released
  • 19 actively exploited vulnerabilities confirmed, including 6 targeting Microsoft Windows and a Cisco Catalyst SD-WAN flaw at CVSS 10.0

Immediate action: Prioritize network segmentation and access controls for AWS, Google Cloud, Cisco SD-WAN, and Microsoft Windows environments where active exploitation is confirmed. With 0% patch availability, implement compensating controls including WAF rules, privilege restrictions, and enhanced monitoring for exploitation indicators across affected cloud services and endpoint systems.

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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