What is CVE-2022-31901?

CVE-2022-31901 is a medium-severity vulnerability in Notepad-Plus-Plus Notepad\+\+, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2023-01-19.

How severe is CVE-2022-31901?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2022-31901 known to be exploited?

6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Notepad-Plus-Plus Notepad\+\+

CVE-2022-31901

Buffer overflow in function Notepad_plus::addHotSpot in Notepad++ v8.4.3 and earlier allows attackers to crash the application via two crafted files.

Vulnerability class: Buffer Overflow

Published 2023-01-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.013 (69.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Notepad-Plus-Plus Notepad\+\+

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

References

github.com/CDACesec/CVE-2022-31901 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-31901?: CVE-2022-31901 is a medium-severity vulnerability in Notepad-Plus-Plus Notepad\+\+, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2023-01-19.
How severe is CVE-2022-31901?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2022-31901 known to be exploited?: 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.