CVE-2025-26635
published 2025-04-08CVE-2025-26635: Weak authentication in Windows Hello allows an authorized attacker to bypass a security feature over a network.
PriorityP341medium6.5CVSS 3.1
AVNACLPRHUINSUCHIHAN
EPSS
1.29%
66.4th percentile
Weak authentication in Windows Hello allows an authorized attacker to bypass a security feature over a network.
Affected
32 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1809 | < 10.0.17763.7136 | 10.0.17763.7136 |
| microsoft | windows_10_21h2 | < 10.0.19044.5737 | 10.0.19044.5737 |
| microsoft | windows_10_22h2 | < 10.0.19045.5737 | 10.0.19045.5737 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.7136 | 10.0.17763.7136 |
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.5737 | 10.0.19044.5737 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.5737 | 10.0.19045.5737 |
| microsoft | windows_11_22h2 | < 10.0.22621.5189 | 10.0.22621.5189 |
| microsoft | windows_11_23h2 | < 10.0.22631.5189 | 10.0.22631.5189 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.5189 | 10.0.22621.5189 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.5189 | 10.0.22631.5189 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.5189 | 10.0.22631.5189 |
| microsoft | windows_server_2019 | < 10.0.17763.7136 | 10.0.17763.7136 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.7136 | 10.0.17763.7136 |
| microsoft | windows_server_2022 | < 10.0.20348.3453 | 10.0.20348.3453 |
| microsoft | windows_server_2022 | >= 10.0.20348.0 < 10.0.20348.3453 | 10.0.20348.3453 |
| microsoft | windows_server_2022_23h2 | < 10.0.25398.1551 | 10.0.25398.1551 |
| msrc | cbl2_memcached_1.6.22-1_on_cbl_mariner_2.0 | — | — |
| msrc | windows_10_version_1809_for_32-bit_systems | — | — |
| msrc | windows_10_version_1809_for_x64-based_systems | — | — |
| msrc | windows_10_version_21h2_for_32-bit_systems | — | — |
| msrc | windows_10_version_21h2_for_arm64-based_systems | — | — |
| msrc | windows_10_version_21h2_for_x64-based_systems | — | — |
| msrc | windows_10_version_22h2_for_32-bit_systems | — | — |
| msrc | windows_10_version_22h2_for_arm64-based_systems | — | — |
| msrc | windows_10_version_22h2_for_x64-based_systems | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
vendor_msrc9.8CRITICAL
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GHSA
GHSA-cp6c-ff57-294g: Weak authentication in Windows Hello allows an authorized attacker to bypass a security feature over a network
ghsa_unreviewed·2025-04-08
CVE-2025-26635 [MEDIUM] CWE-1390 GHSA-cp6c-ff57-294g: Weak authentication in Windows Hello allows an authorized attacker to bypass a security feature over a network
Weak authentication in Windows Hello allows an authorized attacker to bypass a security feature over a network.
Microsoft
Windows Hello Security Feature Bypass Vulnerability
vendor_msrc·2025-04-08·CVSS 6.5
CVE-2025-26635 [MEDIUM] CWE-1390 Windows Hello Security Feature Bypass Vulnerability
Windows Hello Security Feature Bypass Vulnerability
Description: Weak authentication in Windows Hello allows an authorized attacker to bypass a security feature over a network.
FAQ: What kind of security feature could be bypassed by successfully exploiting this vulnerability?
An attacker who successfully exploited this vulnerability could bypass the Windows Hello security feature.
Where can I find more information about Windows Hello?
Please see Windows Hello | Microsoft Learn for more details.
Windows Hello: Windows Hello
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Security Feature Bypass
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5055519
Microsoft
PHP-Memcached v2.2.0 and below contains an improper NULL termination which allows attackers to execute CLRF injection. Note: Third parties have disputed this as not affecting PHP-Memcached directly.
vendor_msrc·2022-04-12·CVSS 9.8
CVE-2022-26635 [CRITICAL] PHP-Memcached v2.2.0 and below contains an improper NULL termination which allows attackers to execute CLRF injection. Note: Third parties have disputed this as not affecting PHP-Memcached directly.
PHP-Memcached v2.2.0 and below contains an improper NULL termination which allows attackers to execute CLRF injection. Note: Third parties have disputed this as not affecting PHP-Memcached directly.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the C
No detection rules found.
No public exploits indexed.
2025-04-08
Published