CVE-2026-85995 Notepad++ - Remote Code Execution

Notepad++ 8.9.7 to 8.9.8 contains a code execution vulnerability caused by improper validation of the updater's embedded certificate, letting attackers launch modified code via the updater path, exploit requires file replacement.

CVSS base score 7.3 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.12% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Published
22 September 2026
Updated
15 October 2026
Weakness
CWE-347

Vendor fix

Update to version 8.9.8 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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