CVE-2022-31901Public exploitNetwork attack vector

Application crash via unhandled oversized allocation

Published Jan 19, 2023 · Updated Apr 4, 2025

Denial of service in Notepad++ 8.4.3 and earlier allows context-dependent attackers to crash the application via two crafted files. Notepad_plus::addHotSpot allocates a TCHAR buffer from an attacker-influenced span length, and an oversized request raises an unhandled std::bad_alloc. A user must open both files in 32-bit Notepad++; the reported consequence is an application crash, with no demonstrated code execution.

CVSS severity6.5
Medium
EPSS probability1.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Notepad++ 8.4.3 and earlier allows context-dependent attackers to crash the application via two crafted files. Notepad_plus::addHotSpot allocates a TCHAR buffer from an attacker-influenced span length, and an oversized request raises an unhandled std::bad_alloc. A user must open both files in 32-bit Notepad++; the reported consequence is an application crash, with no demonstrated code execution.

The record

CVE
CVE-2022-31901
Published
Jan 19, 2023
Updated
Apr 4, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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