Exploitation timeline
Threadlinqs has recorded 6 Notepad-plus-plus CVEs published between and . The busiest month was 2026-02 (1 new CVE). 1 of them (17%) are listed in CISA KEV, which means exploitation in the wild has been confirmed.
Most exploited vulnerabilities
Ranked with CISA KEV listings first, then EPSS exploit probability, then CVSS score. Showing 6 of 6 tracked Notepad-plus-plus CVEs.
- CVE-2025-15556high 7.5KEVEPSS 5.3%
- CVE-2023-40031high 7.8EPSS 0.4%
- CVE-2026-73250medium 5.4EPSS 0.1%
- CVE-2023-40164medium 5.5EPSS 0.1%
- CVE-2023-40166medium 5.5EPSS 0.1%
- CVE-2023-40036medium 5.5EPSS 0%
Products affected
Threadlinqs normalises CPE and CNA product records across all 6 CVEs; 2 distinct Notepad-plus-plus products are affected. The most frequently affected:
- Notepad++ 5 CVEs
- notepad-plus-plus 1 CVE
Threat activity
1 tracked threat campaign reference Notepad-plus-plus products or exploit Notepad-plus-plus CVEs:
How to prioritise Notepad-plus-plus patching
This order follows the data Threadlinqs holds for Notepad-plus-plus, not a generic severity checklist:
- 1 of 6 Notepad-plus-plus CVEs (17%) are in CISA KEV: treat them as actively exploited and remediate them first, starting with CVE-2025-15556.
- Outside KEV, the highest EPSS scores are CVE-2023-40031 (0.4%), CVE-2026-73250 (0.1%), CVE-2023-40164 (0.1%).
- 0 CVEs score Critical and 2 High on CVSS v3 (maximum 7.8, average 6.2); sequence these after KEV and high-EPSS items.
About this data
Vendor attribution comes from the CNA and CPE product records of each CVE, folded to one vendor name; CVSS, EPSS and KEV status are read from the Threadlinqs CVE catalog; campaign and actor links come from tracked threat records. Counts reflect the data as of 2026-10-05 and refresh daily.