🛡️ CVE-2026-55132 — 365-apps

🟠 CVSS 7.8 — High ✅ No Known Exploit CWE-415 NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Double free in Microsoft Office Word allows an unauthorized attacker to execute code locally.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-55132 is classified as CWE-415: Double Free. The same allocation is released twice, corrupting allocator bookkeeping.

Affected software

CVE-2026-55132 is recorded against 7 packages.

  • 365-apps
  • microsoft-365
  • office-2019
  • office-2021
  • office-2024
  • sharepoint-server
  • word

Timeline and source

Published on 14 July 2026 and last revised on 16 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

msrc.microsoft.com

Details

Severity HIGH
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE CWE-415
Public Exploit ✅ No
Source NVD
Published 2026-07-14
Updated 2026-08-11
Modified 2026-07-16

Affected Packages

Software From version Fixed in
365-apps — —
microsoft-365 — —
office-2019 — —
office-2021 — —
office-2024 — —
sharepoint-server — —
word — —

Similar Threats

Site Security Check

Is 365-apps part of your stack?

CVE-2026-55132 is rated CVSS 7.8 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.