Buffer overflow in Notepad-Plus-Plus Notepad\+\+
CVE-2023-40036
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++.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (28.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Notepad-Plus-Plus Notepad\+\+
- Notepad-Plus-Plus — versions <= 8.5.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- securitylab.github.com/advisories/GHSL-2023-092_Notepad__/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-40036?
- CVE-2023-40036 is a medium-severity vulnerability in Notepad-Plus-Plus Notepad\+\+, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.5/10. Published 2023-08-25.
- How severe is CVE-2023-40036?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2023-40036 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.