Prioritization
- NVD CVSS
- 10.0
- Published
- Aug 20, 2026 6:17 PM EDT
- Modified
- Aug 22, 2026 12:17 AM EDT
- CISA KEV
- No
← Threat Center
10.0
CRITICAL • CVSS 3.1
CVE-2026-65801
Server-side request forgery (ssrf) in Microsoft Exchange Online allows an unauthorized attacker to elevate privileges over a network.
Red Hat context
No Red Hat-specific cached context is available for this record.
Recommended response
- Identify affected assets with Qualys, Tanium, software inventory, CMDB or configuration-management data.
- Confirm package/application applicability before change execution; CVSS alone does not prove that every host is vulnerable.
- Patch, upgrade, rehydrate or apply a vendor-approved mitigation through controlled change. GraceITS can automate eligible waves with Ansible/Tanium.
- Rescan after remediation and reconcile remaining exceptions, false positives, unsupported systems and compensating controls.