CVE-2026-54120: Improper input validation in Microsoft Surface allows an authorized attacker to execute code over a network.

criticalCVSS 9.9CVE-2026-54120

Improper input validation in Microsoft Surface allows an authorized attacker to execute code over a network.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: critical — CVSS 9.9
Published: 2026-07-24
Last updated: 2026-07-25
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-54120

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-2026-541200.71% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 50% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-54120	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Improper input validation

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-2025-62347: HCL iControl was affected by Improper Input Validation vulnerability. It is vulnerable to unex…nvd · 2026-07-31
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
highCVE-2026-22621: Improper input validation in one of the session management interface of Eaton's Tripp Lite Ser…nvd · 2026-07-30
highCVE-2026-22620: Improper input validation in the authentication component of Eaton's Tripp Lite series PADM fi…nvd · 2026-07-30
highCVE-2026-40272: Improper Input Validation in the decode() function of the traceparser library could allow an a…nvd · 2026-07-29