CISA placed the actively exploited F5 BIG-IP APM heap-based buffer overflow CVE-2026-94127 into its KEV catalog on 2026-09-22 with a three-day remediation deadline for federal agencies. The zero-day enables unauthenticated remote code execution on systems running both an access policy and OAuth profile on the same virtual server, prompting immediate patching and forensic triage.
Wrong: attributed active exploitation confirmation to Canadian Centre for Cyber Security and NCSC Netherlands without primary sources. Right: attributed to CISA KEV listing and F5’s advisory that the vulnerability has been exploited; forensic-triage line now cites CISA BOD 26-04 only.
The Canadian Centre for Cyber Security and NCSC Netherlands confirm the flaw is being exploited as a zero-day.
Both CISA and the NCSC advise checking for indicators of compromise prior to remediation.
Enterprise teams running BIG-IP APM should treat this as an emergency patch; the combination of zero-day exploitation, high CVSS, and short BOD 26-04 window leaves little margin before ransomware actors weaponize it.
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Microsoft has disclosed CVE-2026-83947, a CVSS 7.7 HIGH spoofing vulnerability in Azure Event Grid caused by missing authorization. Microsoft says it has already fully mitigated the cloud-service flaw and customers have nothing to do.
A critical vulnerability CVE-2026-77900 affects Microsoft Azure App Service for Linux with a CVSS score of 9.8. The flaw allows an unauthenticated attacker to execute code over the network. Microsoft says it has already fully mitigated the flaw; no customer action is needed.
Microsoft Dataverse is affected by critical vulnerability CVE-2026-88131, which allows remote code execution. The flaw scores 9.8 on CVSS; Microsoft says it has already fully mitigated it and customers have nothing to patch.
IBM Security Verify Access 10.0 through 10.0.9.2 and IBM Verify Identity Access 11.0 through 11.0.3 contain critical authentication bypass flaw CVE-2026-16823. The NVD rates it 9.1 and warns of remote exploitation without credentials.
Red Hat OpenShift Container Platform 4 is affected by CVE-2026-93017, a high-severity flaw that lets attackers read every secret in every namespace. The 7.7 CVSS score reflects broad access granted through an unrestricted ClusterRole on the insights-operator-gather service account.
