notepad2 vulnerabilities and fixes

Recent CVEs affecting notepad2, with upgrade or downgrade steps. 2 tracked.

notepad2 has 2 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 0. Most recent: 2026-03-22. Highest priority: CVE-2026-4546 (score 33/100).

• CVE-2026-4546 HIGH 7.0 DOWNGRADE A weakness has been identified in Flos Freeware Notepad2 4.2.25
• CVE-2026-4545 HIGH 7.0 DOWNGRADE A security flaw has been discovered in Flos Freeware Notepad2 4.2.25

FAQ

How do I fix notepad2 vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is notepad2 being exploited right now?

None of the tracked notepad2 CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which notepad2 CVE should I patch first?

CVE-2026-4546 currently ranks highest (33/100): A weakness has been identified in Flos Freeware Notepad2 4.2.25.

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