Thursday, April 9, 2026 Archive

Archived Security Snapshot

Critical vulnerabilities, curated daily for security professionals

Archived Security Brief

WordPress plugins account for four of Thursday's 19 critical vulnerabilities, with CVE-2026-1830, CVE-2026-3296, CVE-2026-2942, and CVE-2026-4003 all scoring CVSS 9.8. Critical disclosures dropped 30% from Wednesday's 27, while high-priority CVEs held steady at 100. CVE-2026-39888 (CVSS 9.9) in Microsoft Teams represents the highest-scored finding, alongside CVE-2026-3535 (CVSS 9.8) in Google Web Fonts and CVE-2026-34179 (CVSS 9.1) in Canon LXD systems. Three vulnerabilities are confirmed actively exploited — Ivanti EPMM (CVE-2026-1340), Google Dawn (CVE-2026-5281), and TrueConf Client (CVE-2026-3502), each rated CVSS 9.5. Patch availability stands at zero percent across all 119 disclosed CVEs, making network-level mitigations and access restrictions the primary defensive option.

  • CVE-2026-39888 (CVSS 9.9) in Microsoft Teams is Thursday's highest-scored vulnerability, with a second Teams flaw (CVE-2026-39890, CVSS 9.8) also disclosed
  • 19 critical CVEs disclosed, down 30% from Wednesday's 27 — WordPress plugins represent four of the critical findings
  • 100 high-priority CVEs, unchanged from the prior day, bringing total disclosures to 119
  • Remote code execution and authentication bypass patterns appear across WordPress, Google Web Fonts, and Canon LXD products
  • Zero patches are currently available for any disclosed vulnerability, requiring compensating controls across all affected systems
  • Three actively exploited vulnerabilities confirmed in Ivanti EPMM, Google Dawn, and TrueConf Client, all rated CVSS 9.5

Immediate action: Prioritize restricting network access to Ivanti EPMM, Google Dawn, and TrueConf Client instances given confirmed active exploitation. WordPress administrators should audit and disable affected plugins until patches become available, and Teams deployments should be monitored for anomalous activity. With zero patches available across all 119 CVEs, implement network segmentation and enhanced logging as interim controls.

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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