CVE-2026-54984
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2026-54984 is indexed in GitHub PoC. Expect opportunistic scanning and exploitation attempts — prioritize remediation even though it is not (yet) in the CISA KEV catalog.
An attacker can exploit multiple vulnerabilities in Microsoft Windows Server 2012, Microsoft Windows Server 2012 R2, Microsoft Windows Server 2016, Microsoft Windows 10, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Exchange, Microsoft Windows 11, Microsoft Windows Server 2025 and Microsoft Windows to execute arbitrary code, to increase privileges, to conduct a denial of service attack, to disclose information, to manipulate files, to conduct a cross-site scripting attack, and to bypass security measures.
CSIRTS triage
- What
- Multiple vulnerabilities across Windows and Exchange products enable remote code execution, privilege escalation, denial of service, information disclosure, and security bypass.
- Who is affected
- All organizations running Microsoft Windows Server 2012 through 2025, Windows 10 and 11, and Microsoft Exchange.
- Urgency
- Critical; multiple vectors for remote code execution and privilege escalation with no exploitation barriers reported.
- Action
- Apply all available Microsoft security updates immediately for the affected Windows and Exchange versions.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2026-54984 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗
Advisory coverage (4)
- critical[NEW] [critical] Microsoft Windows Products: Multiple vulnerabilitiescert-bund · 2026-08-14
- unknownexploitedNCSC-2026-0284 [1.00] [M/H] Vulnerabilities patched in Microsoft Windowsncsc-nl · 2026-08-11
- highCVE-2026-54984: Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to exe…nvd · 2026-08-11
- highCVE-2026-54984: Windows Imaging Component Remote Code Execution Vulnerabilitymsrc · 2026-08-11
External references
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[](https://www.csirts.com/cve/CVE-2026-54984)