CVE-2026-26127: exploitation status and patch state

CVE-2026-26127 · CVSS 7.5 HIGH · patch available

Out-of-bounds read in .NET allows an unauthorized attacker to deny service over a network.

Is CVE-2026-26127 exploited?

• Not in the CISA KEV catalog.
• 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?

• KB5081276
• KB5081278

What PlainSec published about CVE-2026-26127

• Microsoft Issues March Patches for 93 Vulnerabilities (2026-03-12)

Primary sources

• NVD record
• Microsoft KB5081276
• Microsoft KB5081278

What this record does not say

• No EPSS score.
• No affected package data.

KEV and EPSS are re-checked daily. Record last updated 2026-08-11.