CVE-2026-86056

mediumpriority · track · 0EPSS 0.002 · 5 %ileDE

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.16% (5th) EPSS

CVSS 5.5 · medium

Is it mine?

2 products

Check your exposure

Who says so?

1 sources

cert_bund

EPSS · scored 2026-10-27

Notepad++ is a free and open-source source code editor. Prior to 8.9.8, the NPPM_SAVESESSION handler in PowerEditor/src/NppBigSwitch.cpp converts lParam to a sessionInfo pointer and dereferences its nbFile, files, and sessionFilePathName members without checking for null. A process running at the same or a higher Windows integrity level on the same desktop can send NPPM_SAVESESSION with a null lParam, immediately terminating Notepad++ and causing denial of service and loss of unsaved documents. This issue is fixed in version 8.9.8.

cvss

Technical severity, 0–10. One row per scoring source.

5.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · security-advisories@github.comexploitability 1.8 · impact 3.6

v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: no · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-476USprimary

affected products (2)

Products and version ranges known to be affected.

Open Source Notepad++ <8.9.8all versionscert_bundDE
Open Source Notepad++< 8.9.8cert_bundDE

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2968Notepad++: Mehrere SchwachstellenDeutsch2026-08-23csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Notepad++ ausnutzen, um Sicherheitsmaßnahmen zu umgehen, Windows-Authentifizierungsdaten offenzulegen, Dateien zu löschen oder zu manipulieren, beliebigen Code auszuführen oder Denial-of-Service-Zustände herbeizuführen.

sources

Which sources assert this record, and when.

cert_bund NVD CVE.org MITRE

published 2026-09-22modified 2026-09-23

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references (4) nvd

External citations — patches, advisories, analysis.

scry

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