Windows Cryptographic Services Remote Code Execution Vulnerability
Use after free in Windows Cryptographic Services allows an unauthorized attacker to execute code over a network.
MSRC compact vulnerability detail
CVE-2025-29828 · Windows Schannel Remote Code Execution Vulnerability
Missing release of memory after effective lifetime in Windows Cryptographic Services allows an unauthorized attacker to execute code over a network.
Signals
Windows Cryptographic Services
Remote Code Execution
Exploited: No
Publicly disclosed: No
Exploitability: Exploitation Less Likely
CWE
Patch Diff
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Resolved binary override
Use this when the MSRC module name cannot be mapped automatically or the resolved binary looks wrong.
Description
Missing release of memory after effective lifetime in Windows Cryptographic Services allows an unauthorized attacker to execute code over a network.
FAQ / Articles
Windows Cryptographic Services Remote Code Execution Vulnerability
Missing release of memory after effective lifetime in Windows Cryptographic Services allows an unauthorized attacker to execute code over a network.
FAQ
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires an attacker to send a large number of messages.
FAQ
How could an attacker exploit the vulnerability? An attacker can exploit this vulnerability by sending malicious fragmented ClientHello messages to a target server that accepts Transport Layer Security (TLS) connections.