CVE-2026-20841
Windows Notepad App Remote Code Execution Vulnerability
CVSS v3
7.8
HIGH
EPSS Score
12.5 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
none
SSVC status
Description
Improper neutralization of special elements used in a command ('command injection') in Windows Notepad App allows an unauthorized attacker to execute code locally.
Technical details
- Published
- 2026-02-10
- Last Modified
- 2026-02-25
Frequently asked questions
What is 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.
Is CVE-2026-20841 actively exploited?
Active exploitation of CVE-2026-20841 has not been confirmed. Its EPSS score was 12.5% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-20841?
CVE-2026-20841 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2026-20841 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 500 free checks/month · Free API key
Other 2026 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).
- CVE-2026-10520KEV
- CVE-2026-24061KEV
- CVE-2026-1281KEV
- CVE-2026-41940KEV
- CVE-2026-1340KEVUnauthenticated Remote Code Execution via Code Injection in Ivanti Endpoint Manager Mobile
- CVE-2026-23760KEVSmarterTools SmarterMail < Build 9511 Authentication Bypass via Password Reset API
- CVE-2026-21643KEVSQL Injection Vulnerability in FortiClientEMS 7.4.4 Allows Unauthenticated Remote Code Execution
- CVE-2026-20182KEV