CVE-2026-20841: exploitation status and patch state

CVE-2026-20841 · CVSS 7.8 HIGH · EPSS 12% · patch available

Improper neutralization of special elements used in a command ('command injection') in Windows Notepad App allows an unauthorized attacker to execute code locally.

Is CVE-2026-20841 exploited?

• Not in the CISA KEV catalog.
• EPSS puts exploitation in the next 30 days at 12%.
• 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?

• Release Notes

What PlainSec published about CVE-2026-20841

PlainSec has not published a story about this CVE.

Primary sources

• NVD record
• Microsoft Release Notes

What this record does not say

• No affected package data.

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