Heap-based buffer overflow in Notepad++ - CVE-2023-40031
Published: September 8, 2023 / Updated: September 22, 2023
Vulnerability identifier: #VU80567
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-40031
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the Utf8_16_Read::convert() function in UniConversion.cxx. A remote attacker can trick the victim to open a specially crafted file, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Notepad++
How to mitigate CVE-2023-40031
Install updates from vendor's website.
Notepad++ - update to 8.5.7