CVE-2026-26114: exploitation status and patch state

CVE-2026-26114 · CVSS 8.8 HIGH · EPSS 3% · patch available

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Is CVE-2026-26114 exploited?

• Not in the CISA KEV catalog.
• EPSS puts exploitation in the next 30 days at 3%.
• Public exploit code: none found in monitored sources.

Which products and versions are affected?

No affected package list recorded here yet.

Is there a patch?

• KB5002850
• KB5002845

What PlainSec published about CVE-2026-26114

• Unauthenticated RCE in SharePoint Rated Critical (2026-03-26)

Primary sources

• NVD record
• Microsoft KB5002850
• Microsoft KB5002845

What this record does not say

• No affected package data.

KEV and EPSS are re-checked daily. Record last updated 2026-08-12.