Buffer over-read in Notepad++ - #VU137484
Published: September 8, 2023 / Updated: July 14, 2026
Vulnerability identifier: #VU137484
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-126
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in nsCodingStateMachine::NextState when parsing a crafted file during file open. A remote attacker can trick the victim into opening a crafted file to disclose sensitive information.
User interaction is required to open a crafted file.
Affected software
Notepad++
Remediation
Install security update from vendor's website.
Notepad++ - update to 8.5.7