CVE-2026-26111: exploitation status and patch state

CVE-2026-26111 · CVSS 8.0 HIGH · EPSS 1% · patch available

Integer overflow or wraparound in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to execute code over a network.

Is CVE-2026-26111 exploited?

• Not in the CISA KEV catalog.
• EPSS puts exploitation in the next 30 days at 1%.
• 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?

• KB5078752
• KB5078766
• KB5078737
• KB5078885
• KB5078740
• KB5078736
• KB5079473
• KB5084597
• KB5078883
• KB5078734

What PlainSec published about CVE-2026-26111

• Apply Windows 11 Hotpatch for RRAS Remote Code Flaws (2026-03-15)

Primary sources

• NVD record
• Microsoft KB5078752
• Microsoft KB5078766
• Microsoft KB5078885
• Microsoft KB5078740
• Microsoft KB5079473
• Microsoft KB5078883
• Microsoft KB5078734

What this record does not say

• No affected package data.

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