CVE-2026-65660
Code Injection in Microsoft SharePoint. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 25 September 2026.
- Product
- Microsoft SharePoint
- Added to CISA's catalog
- Federal fix-by date
- Ransomware
- No known use in ransomware campaigns
- Vendor advisories
- Sources
- CISA’s catalog, NVD entry
CISA’s description.
Microsoft SharePoint contains a code injection vulnerability which could allow an authorized attacker to execute code over a network.
More from Microsoft this year.
- CVE-2026-96951 Command Injection, added
- CVE-2026-85880 Heap-Based Buffer Overflow, added
- CVE-2026-81963 Link Following, added
- CVE-2019-1068 Remote Code Execution, added
- CVE-2026-55040 Weak Authentication, added
- CVE-2026-33824 Double Free, added
- CVE-2026-68820 Use-After-Free, added
- CVE-2026-50522 Deserialization of Untrusted Data, added
Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 4 November 2026.