CVE tracker / CVE-2025-29828

CVE-2025-29828

CVE-2025-29828 is the Windows Schannel Remote Code Execution Vulnerability. Microsoft rates it Critical, CVSS 8.1. It is not in CISA's Known Exploited Vulnerabilities catalog. Published June 10, 2025.

Risk summary

HighRemote Code Execution
8.1
CVSS v3 base
1.3%
EPSS: chance of exploitation in 30 days
High
Severity
Critical
Microsoft's rating
Less Likely
Microsoft: exploitation
No
In CISA KEV

Microsoft describes it: “Missing release of memory after effective lifetime in Windows Cryptographic Services allows an unauthorized attacker to execute code over a network.”

How to fix it

Microsoft lists 11 affected products and the update that fixes each:

What Microsoft changed

Details

Weakness
CWE-401: Missing Release of Memory after Effective Lifetime
Publicly disclosed (Microsoft)
No
Exploited (Microsoft)
No
Known exploited (CISA KEV)
Not listed
Published
June 10, 2025
Last revised
June 10, 2025

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References

From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.