Thursday, March 5, 2026 Archive

Archived Security Snapshot

Critical vulnerabilities, curated daily for security professionals

Archived Security Brief

Thursday's vulnerability disclosures are dominated by two CVSS 10.0 flaws in Cisco Secure Firewall (CVE-2026-20131, CVE-2026-20079), representing the highest-impact items requiring immediate defensive attention. The disclosure volume includes 9 critical and 70 high-priority CVEs, down 31% and 30% respectively from the prior day's elevated counts. Additional critical vulnerabilities affect D-Link DIR routers (CVE-2025-70220, CVE-2025-70223), pac4j-jwt authentication (CVE-2026-29000 at CVSS 10.0), and Zephyr RTOS (CVE-2026-1678). Ten actively exploited vulnerabilities span a wide range of targets including Google Chromium, GitLab, Roundcube Webmail, VMware Aria Operations, and Qualcomm chipsets, with several dating back to legacy CVEs from 2008 and 2020. No patches have been confirmed available at this time, making compensating controls and network segmentation essential for exposed systems.

  • Three CVSS 10.0 vulnerabilities disclosed: two in Cisco Secure Firewall and one in pac4j-jwt authentication library
  • 9 critical CVEs (down 31% from prior day) and 70 high-priority CVEs (down 30%)
  • D-Link DIR routers, Zephyr RTOS, and Mobvoi IoT devices affected by critical remote code execution flaws
  • 10 actively exploited vulnerabilities targeting Chromium, GitLab, Roundcube Webmail, VMware Aria Operations, and Qualcomm chipsets
  • 0% confirmed patch availability across all disclosed CVEs; compensating controls recommended

Immediate action: Prioritize assessment of Cisco Secure Firewall deployments for CVE-2026-20131 and CVE-2026-20079, and review exposure to D-Link DIR routers and pac4j-jwt implementations. With no patches currently confirmed, apply network segmentation, restrict management interfaces, and monitor for exploitation indicators across all affected platforms.

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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