CISA added CVE-2026-21962, an improper access control flaw in Oracle HTTP Server and the Oracle Weblogic Server Proxy Plug-in, to its Known Exploited Vulnerabilities catalog on 2026-08-24. Federal agencies have until 2026-08-27 to apply mitigations per vendor instructions or discontinue use.

It is unknown whether the vulnerability is known to be used in ransomware campaigns.
The three-day remediation deadline for federal systems signals that exploitation is widespread enough to warrant immediate prioritization under BOD 26-04 risk-based patching.
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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.