CVE-2023-40036 - CVE House
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Status published Medium CVE-2023-40036

Notepad++ global buffer read overflow in CharDistributionAnalysis::HandleOneChar

Vulnerability Description

Notepad++ is a free and open-source source code editor. Versions 8.5.6 and prior are vulnerable to global buffer read overflow in `CharDistributionAnalysis::HandleOneChar`. The exploitability of this issue is not clear. Potentially, it may be used to leak internal memory allocation information. As of time of publication, no known patches are available in existing versions of Notepad++.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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CVE-2023-40166
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CVE-2023-40164
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CVE-2023-40031
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Affected Vendor

notepad-plus-plus

View all reports →

Affected Software

notepad-plus-plus
Vulnerable Versions:
<= 8.5.6

Timeline

Official Publish: August 25th, 2023
Last Modified: October 1st, 2024
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Weaknesses (CWE)

CWE-120

MITRE ATT&CK TTPs

T1203 Exploitation for Client Execution
Execution
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1055 Process Injection
Defense Evasion
T1105 Ingress Tool Transfer
Command and Control