BaselineWatch
Desk
Your fleet and your work Fleetyour releases and the hardware they run onTriagewhat needs a decisionWatchlistthe products and platforms you runSaved searchesthe lists you come back to
This instance Sourceswhat is read, how often, under what termsDigestthe daily or weekly summary, and alerts
How it is drawn Appearancethe look and the colour schemeBrandingthe mark this instance wears
Owner sign-in

CVE-2026-42831

7.8 high SSVC exploitation: none Analyzed
NVD · CVE.org

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.8 · microsoftNVD modified 2026-10-26 00:10

Affected (CPE criteria) 3

  • cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:android:*:*
  • cpe:2.3:a:microsoft:office:2024:*:*:*:ltsc:macos:*:*
  • cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:*

References 1