In CISA KEV7.7 HighCWE-494
CVE-2025-15556
Notepad++ Download of Code Without Integrity Check Vulnerability
Status
- Exploited in the wild
- In CISA KEV since 12 Feb
- Vendor fix available
Federal deadlineThu 5 Mar, 23:59 UTC
Passed 233 days ago
CISA KEV · added 12 Feb
Exploit probabilityEPSSchecked 25 Oct
1.8%probability of exploitation in the next 30 days
Higher than 78% of scored CVEs
SeverityCVSS
7.7High
Description NVD
Notepad++ versions prior to 8.8.9, when using the WinGUp updater, contain an update integrity verification vulnerability where downloaded update metadata and installers are not cryptographically verified. An attacker able to intercept or redirect update traffic can cause the updater to download and execute an attacker-controlled installer, resulting in arbitrary code execution with the privileges of the user.
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Coverage 3 articles · 3 outlets
See the full timelineShow as table
| Published (UTC) | Outlet | Headline |
|---|---|---|
| Fri 13 Feb · 09:35 UTC | Security Affairs | U.S. CISA adds SolarWinds Web Help Desk, Notepad++, Microsoft Configuration Manager, and Apple devices flaws to its Known Exploited Vulnerabilities catalog |
| Fri 13 Feb · 10:05 UTC | The Hacker News | Researchers Observe In-the-Wild Exploitation of BeyondTrust CVSS 9.9 Vulnerability |
| Fri 13 Feb · 11:10 UTC | SecurityWeek | CISA Warns of Exploited SolarWinds, Notepad++, Microsoft Vulnerabilities |
- CISA Warns of Exploited SolarWinds, Notepad++, Microsoft VulnerabilitiesSecurityWeek · mentions it in passing
- Researchers Observe In-the-Wild Exploitation of BeyondTrust CVSS 9.9 VulnerabilityThe Hacker News · mentions it in passing
- U.S. CISA adds SolarWinds Web Help Desk, Notepad++, Microsoft Configuration Manager, and Apple devices flaws to its Known Exploited Vulnerabilities catalogSecurity Affairs · first in our coverage · mentions it in passing