CVE-2025-55229

CWE-3474 documents4 sources

Severity

5.3MEDIUM

EPSS

0.1%

top 82.26%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Microsoft Windows 10 Version 1507 Microsoft Windows 10 Version 1607 Microsoft Windows 10 Version 1809 +22 more

Timeline

PublishedAug 21

Description

Improper verification of cryptographic signature in Windows Certificates allows an unauthorized attacker to perform spoofing over a network.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NExploitability: 3.9 | Impact: 1.4

Affected Packages25 packages

▶NVDmicrosoft/windows< 10.0.14393.8066+4

▶NVDmicrosoft/windows_10_1507< 10.0.10240.21014

▶NVDmicrosoft/windows_10_1607< 10.0.14393.8066

▶NVDmicrosoft/windows_10_1809< 10.0.17763.7314

▶NVDmicrosoft/windows_10_21h2< 10.0.19044.5854

🔴Vulnerability Details

CVEList

Windows Certificate Spoofing Vulnerability↗2025-08-21

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GHSA

GHSA-vj5w-xw66-qjq5: Improper verification of cryptographic signature in Windows Certificates allows an unauthorized attacker to perform spoofing over a network↗2025-08-21

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📋Vendor Advisories

Microsoft

Windows Certificate Spoofing Vulnerability↗2025-08-12

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