CVE-2026-55124: Improper validation of specified type of input in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

mediumCVSS 5.5CVE-2026-55124

Improper validation of specified type of input in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: medium — CVSS 5.5
Published: 2026-07-14
Last updated: 2026-07-16
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-55124

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-551240.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-55124	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

critical[NEW] [critical] Microsoft Office products: Multiple vulnerabilitiescert-bund
unknownexploitedNCSC-2026-0237 [1.02] [H/H] Vulnerabilities Fixed in Microsoft Officencsc-nl
unknownexploitedNCSC-2026-0237 [1.01] [H/H] Vulnerabilities fixed in Microsoft Officencsc-nl
unknownMultiple vulnerabilities in Microsoft Office (July 15, 2026)cert-fr-avis
unknownexploitedNCSC-2026-0237 [1.00] [M/H] Vulnerabilities fixed in Microsoft Officencsc-nl
mediumCVE-2026-55124: Microsoft Word Information Disclosure Vulnerabilitymsrc

Recent advisories for Improper validation of

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

mediumCVE-2026-67294: FreeRDP before 3.29.0 improperly validates the Extended Key Usage (EKU) purpose of the peer ce…nvd · 2026-08-01
mediumCVE-2026-67293: FreeRDP before 3.29.0 (affected versions <= 3.28.0) contains an improper certificate hostname …nvd · 2026-08-01
mediumCVE-2025-62347: HCL iControl was affected by Improper Input Validation vulnerability. It is vulnerable to unex…nvd · 2026-07-31
mediumCVE-2026-66720: The GOOSE subscriber component improperly validates the UTC timestamp field in unauthenticated…nvd · 2026-07-30
criticalCVE-2026-13435: IBM Langflow OSS 1.0.0 through 1.10.1 contains an improper input validation vulnerability in t…nvd · 2026-07-30
highCVE-2026-22622: Improper input validation in one of the session management interface of Eaton's Tripp Lite ser…nvd · 2026-07-30