VulnerabilityAnalyzed
CVE-2026-20841
Improper neutralization of special elements used in a command ('command injection') in Windows Notepad App allows an unauthorized attacker to execute code locally.
HIGH 7.8EPSS 11.8%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 11.8%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
Description
Improper neutralization of special elements used in a command ('command injection') in Windows Notepad App allows an unauthorized attacker to execute code locally.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 11.85% probability · 96th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-77
- Affected
- microsoft/windows notepad
- Source
- secure@microsoft.com
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20841Vendor Advisory
- https://news.ycombinator.com/item?id=46971516Issue Tracking
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.