CVE-2026-108400: high-severity vulnerability in Microsoft HEVC Video Extensions
HEVC Video Extensions Remote Code Execution Vulnerability
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.8%
exploitation probability
0.8%top 44% of all CVEs
observed exploitation
nono source reports it
Integer overflow or wraparound in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · HEVC Video ExtensionsMicrosoft · HEVC Video Extensions for Licensed ApplicationsMicrosoft · HEVC Video Extensions from Device ManufacturerRelated CVEs — Microsoft HEVC Video Extensions
In the same product, most dangerous first.
CVE-2021-26902HIGHHEVC Video Extensions Remote Code Execution VulnerabilityEPSS 5.9%CVE-2021-24089HIGHHEVC Video Extensions Remote Code Execution VulnerabilityEPSS 4.7%CVE-2021-27061HIGHHEVC Video Extensions Remote Code Execution VulnerabilityEPSS 4.6%CVE-2020-17109HIGHHEVC Video Extensions Remote Code Execution VulnerabilityEPSS 4.3%CVE-2021-1643HIGHHEVC Video Extensions Remote Code Execution VulnerabilityEPSS 4.2%CVE-2021-1644HIGHHEVC Video Extensions Remote Code Execution VulnerabilityEPSS 4.1%