CVE-2025-55229
published 2025-08-21CVE-2025-55229: Improper verification of cryptographic signature in Windows Certificates allows an unauthorized attacker to perform spoofing over a network.
PriorityP429medium5.3CVSS 3.1
AVNACLPRNUINSUCLINAN
EPSS
0.45%
36.3th percentile
Improper verification of cryptographic signature in Windows Certificates allows an unauthorized attacker to perform spoofing over a network.
Affected
39 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1507 | < 10.0.10240.21014 | 10.0.10240.21014 |
| microsoft | windows_10_1607 | < 10.0.14393.8066 | 10.0.14393.8066 |
| microsoft | windows_10_1809 | < 10.0.17763.7314 | 10.0.17763.7314 |
| microsoft | windows_10_21h2 | < 10.0.19044.5854 | 10.0.19044.5854 |
| microsoft | windows_10_22h2 | < 10.0.19045.5854 | 10.0.19045.5854 |
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.21014 | 10.0.10240.21014 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.8066 | 10.0.14393.8066 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.7314 | 10.0.17763.7314 |
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.5854 | 10.0.19044.5854 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.5854 | 10.0.19045.5854 |
| microsoft | windows_11_22h2 | < 10.0.22621.5335 | 10.0.22621.5335 |
| microsoft | windows_11_23h2 | < 10.0.22631.5335 | 10.0.22631.5335 |
| microsoft | windows_11_24h2 | < 10.0.26100.4061 | 10.0.26100.4061 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.5335 | 10.0.22621.5335 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.5335 | 10.0.22631.5335 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.5335 | 10.0.22631.5335 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.4061 | 10.0.26100.4061 |
| microsoft | windows_server_2016 | < 10.0.14393.8066 | 10.0.14393.8066 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.8066 | 10.0.14393.8066 |
| microsoft | windows_server_2019 | < 10.0.17763.7314 | 10.0.17763.7314 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.7314 | 10.0.17763.7314 |
| microsoft | windows_server_2022 | < 10.0.20348.3630 | 10.0.20348.3630 |
| microsoft | windows_server_2022 | >= 10.0.20348.0 < 10.0.20348.3692 | 10.0.20348.3692 |
| microsoft | windows_server_2022_23h2 | < 10.0.25398.1611 | 10.0.25398.1611 |
| microsoft | windows_server_2025 | < 10.0.26100.4061 | 10.0.26100.4061 |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
vendor_msrc5.3MEDIUM
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Microsoft
Windows Certificate Spoofing Vulnerability
vendor_msrc·2025-08-12·CVSS 5.3
CVE-2025-55229 [MEDIUM] CWE-347 Windows Certificate Spoofing Vulnerability
Windows Certificate Spoofing Vulnerability
Description: Improper verification of cryptographic signature in Windows Certificates allows an unauthorized attacker to perform spoofing over a network.
FAQ: According to the CVSS metrics, successful exploitation of this vulnerability could lead to some loss of confidentiality (C:L),but lead to no loss of availability (A:N) and integrity (I:N)? What does that mean for this vulnerability?
An attacker who successfully exploited the vulnerability could view some sensitive information (Confidentiality) but not all resources within the impacted component may be divulged to the attacker. The attacker cannot make changes to disclosed information (Integrity) or limit access to the resource (Availability).
Windows Certificates: Windows Certificates
Mi
GHSA
GHSA-vj5w-xw66-qjq5: Improper verification of cryptographic signature in Windows Certificates allows an unauthorized attacker to perform spoofing over a network
ghsa_unreviewed·2025-08-21
CVE-2025-55229 [MEDIUM] CWE-347 GHSA-vj5w-xw66-qjq5: Improper verification of cryptographic signature in Windows Certificates allows an unauthorized attacker to perform spoofing over a network
Improper verification of cryptographic signature in Windows Certificates allows an unauthorized attacker to perform spoofing over a network.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-08-21
Published