# CVE-2026-83844: Windows Paint Remote Code Execution Vulnerability

Status: published. Published: 2026-10-13. Updated: 2026-11-06.

Out-of-bounds read in Windows Paint allows an unauthorized attacker to execute code over a network.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: microsoft) — https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83844

## Affected products and versions

- Microsoft / Microsoft Paint: ≥ 11.0.0.0; < 11.2609.401.0 (affected, custom). Source: CNA: microsoft

## Severity and prioritization

- CVSS 3.1: 8.1 (high); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C; source: CNA: microsoft

- CVSS 3.1: 8.1 (high); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H; source: NVD: secure@microsoft.com

- CISA KEV: No listing in collected sources

- EPSS: 0.73% as of 2026-11-06; percentile 54.58%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-125

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83844 (CNA: microsoft; vendor-advisory, patch)

- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83844 (secure@microsoft.com)

## Provenance

- CNA: microsoft: https://www.cve.org/CVERecord?id=CVE-2026-83844; retrieved 2026-11-06; source updated 2026-11-06

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-83844; retrieved 2026-11-07; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-83844; retrieved 2026-11-06; source updated Not reported

Revision: 2abb4ff76cce49d5f92ec045a792aa0e208fdf020d63a0b39d252b631c0c7877

Canonical: https://y2.dev/cve/CVE-2026-83844

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