CVE-2026-54984: Windows Imaging Component Remote Code Execution Vulnerability

highpublic exploitCVSS 7.8CVE-2026-54984

Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code locally.

CSIRTS triage

vendor: Microsoft product: Windows Imaging Component Remote code execution Memory corruption

What: Heap-based buffer overflow in Windows Imaging Component enables local code execution.
Who is affected: Local users or attackers who can supply malicious image files to systems.
Urgency: High severity and CVSS (7.8); can be triggered via file processing if images are accepted from untrusted sources.
Action: Apply Windows security updates for CVE-2026-54984; avoid opening image files from untrusted sources.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch Windows Imaging Component

Get an email when a new Windows Imaging Component advisory drops — max one per day, one-click unsubscribe.

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.8
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54984

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-2026-549840.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-54984	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 Windows Products: Multiple vulnerabilitiescert-bund
unknownexploitedNCSC-2026-0284 [1.00] [M/H] Vulnerabilities patched in Microsoft Windowsncsc-nl
highCVE-2026-54984: Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to exe…nvd

Recent advisories for Windows Imaging Component

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-2026-62740: Use of uninitialized resource in Windows Imaging Component allows an authorized attacker to di…nvd · 2026-08-11
highCVE-2026-54984: Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to exe…nvd · 2026-08-11
mediumCVE-2026-62740: Windows Imaging Component Information Disclosure Vulnerabilitymsrc · 2026-08-11