CVE-2025-52496

Public Exploit

Description

Mbed TLS before 3.6.4 has a race condition in AESNI detection if certain compiler optimizations occur. An attacker may be able to extract an AES key from a multithreaded program, or perform a GCM forgery.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.01%
Affected: Mbed mbedtls
Published at:
Updated at:

References

Link Tags
https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-security-advisory-2025-06-1.md

Frequently Asked Questions

What is the severity of CVE-2025-52496?
CVE-2025-52496 has been scored as a high severity vulnerability.
How to fix CVE-2025-52496?
To fix CVE-2025-52496, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-52496 being actively exploited in the wild?
It is possible that CVE-2025-52496 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-52496?
CVE-2025-52496 affects Mbed mbedtls.
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