High severity8.8CISA KEVNVD Advisory· Published Aug 11, 2026· Updated Sep 26, 2026
CVE-2026-65660
CVE-2026-65660
Description
Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
5(expand)+ 3 more
- (no CPE)
- cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*range: <16.0.19725.20522
- cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
- cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
3- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65660nvdPatchVendor Advisory
- blog.previdian.com/cve-2026-65660-previdian-observes-two-stage-sharepoint-exploitation-attempts/nvdThird Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
News mentions
14- Risky Business #855 -- ShinyHunters done sowing, enters reaping phaseRisky Business · Oct 14, 2026
- Government, Finance Orgs Targeted in Weeks-Long NetScaler Zero-Day AttacksSecurityWeek · Sep 30, 2026
- CISA Warns of Microsoft SharePoint Code Injection Vulnerability Exploited in AttacksCyber Security News · Sep 28, 2026
- Kiteworks Urges Server Shutdown, Finds Advanced Forms VulnerabilitySecurityWeek · Sep 28, 2026
- Citrix Confirms 2 NetScaler Zero-Days After Admins Pulled the PlugSecurityWeek · Sep 28, 2026
- Microsoft SharePoint Flaw CVE-2026-65660 Now Exploited in AttacksSecurityWeek · Sep 27, 2026
- SharePoint RCE and MikroTik RouterOS Flaws Actively Exploited in the WildThe Hacker News · Sep 26, 2026
- Microsoft: CVE-2026-65660 Added to CISA KEV Under Active ExploitationVypr Intelligence · Sep 25, 2026
- Microsoft SharePoint Flaw Lets Attackers Execute Code Remotely With Low PrivilegesCyber Security News · Sep 22, 2026
- SharePoint Flaw Initially Listed as Spoofing by Microsoft Enables Authenticated RCEThe Hacker News · Sep 22, 2026
- Patch Tuesday - August 2026Rapid7 Blog · Aug 11, 2026
- Microsoft's August 2026 Patch Tuesday addresses 398 CVEs (CVE-2026-68820)Tenable Blog · Aug 11, 2026
- Microsoft Patch Tuesday Update August 2026 – 394 Vulnerabilities Fixed, Including 3 Zero-DaysCyber Security News · Aug 11, 2026
- CISA Adds Two Known Exploited Vulnerabilities to CatalogCISA Alerts