Notepad++ is a free and open-source source code editor. From 8.9.4 until 8.9.6, Notepad++ contains a local privilege escalation vulnerability in the installer. During installation, the installer invokes powershell.exe without using an absolute path after setting the working directory to the installation contextMenu directory. If an attacker can pre-place a malicious powershell.exe in a user-writable custom installation directory, and a privileged user later runs the installer and selects that directory, the attacker-controlled executable is launched with the elevated privileges of the installer. This vulnerability is fixed in 8.9.6.
CVE-2026-46710
This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 99% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.8
- EG Score
- 7.8(medium)
- EPSS
- 1.4%
- KEV
- Not listed
Published
June 26, 2026
Last Modified
June 29, 2026
Advisory Details (2)
Auto-updated Jun 26, 2026Privilege Escalation in Notepad++ v8.9.4 & v8.9.5 Installer via Uncontrolled Executable Search Path · Advisory · notepad-plus-plus/notepad-plus-plus · GitHub
https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-6f8f-vmfc-r8c5commit 1d4aabe2102d (notepad-plus-plus/notepad-plus-plus)
Fix landed in notepad-plus-plus/notepad-plus-plus commit 1d4aabe2102d — awaiting tagged release
https://github.com/notepad-plus-plus/notepad-plus-plus/commit/1d4aabe2102d982667ead2dd974bee5e0b1f2d9cWeakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 18× in last 7d / 46× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-12 05:46 UTCEPSS rescore
- 2026-07-12 00:54 UTCEG score recompute
- 2026-07-11 12:49 UTCEG score recompute
- 2026-07-11 00:44 UTCEG score recompute
- 2026-07-10 12:36 UTCEG score recompute
- 2026-07-10 00:30 UTCEG score recompute
- 2026-07-09 19:10 UTCEPSS rescore
- 2026-07-09 12:22 UTCEG score recompute
- 2026-07-09 00:17 UTCEG score recompute
- 2026-07-08 12:12 UTCEG score recompute
- 2026-07-08 00:04 UTCEG score recompute
- 2026-07-07 13:46 UTCEPSS rescore
- 2026-07-07 11:59 UTCEG score recompute
- 2026-07-06 23:54 UTCEG score recompute
- 2026-07-06 11:43 UTCEG score recompute
- 2026-07-06 02:23 UTCEPSS rescore
- 2026-07-05 23:37 UTCEG score recompute
- 2026-07-05 11:32 UTCEG score recompute
- 2026-07-05 02:30 UTCEPSS rescore
- 2026-07-04 23:27 UTCEG score recompute
- 2026-07-04 11:20 UTCEG score recompute
- 2026-07-04 06:31 UTCEPSS rescore
- 2026-07-03 23:15 UTCEG score recompute
- 2026-07-03 11:07 UTCEG score recompute
- 2026-07-02 23:00 UTCEG score recompute
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- 2026-07-02 10:55 UTCEG score recompute
- 2026-07-01 22:37 UTCEG score recompute
- 2026-07-01 15:07 UTCEPSS rescore
- 2026-07-01 10:32 UTCEG score recompute
- 2026-06-30 23:22 UTCEPSS rescore
- 2026-06-30 22:27 UTCEG score recompute
- 2026-06-30 10:22 UTCEG score recompute
- 2026-06-29 22:15 UTCEG score recompute▲ 0.30
- 2026-06-29 21:26 UTCNVD updateCVSS v3 → 7.8
- 2026-06-29 14:06 UTCEPSS rescore
- 2026-06-29 14:06 UTCEPSS rescore
- 2026-06-29 10:10 UTCEG score recompute
- 2026-06-28 22:03 UTCEG score recompute
- 2026-06-28 14:07 UTCEPSS rescore
- 2026-06-28 09:57 UTCEG score recompute
- 2026-06-28 04:56 UTCEPSS rescore
- 2026-06-28 04:56 UTCEPSS rescore
- 2026-06-27 21:53 UTCEG score recompute
- 2026-06-27 09:48 UTCEG score recompute
- 2026-06-26 21:43 UTCEG score recompute
- 2026-06-26 21:42 UTCNVD updatefirst tracked
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