CVE & CISA-KEV Catalog

CVE-2025-52496

HIGH
7.8
CVSS v3
NVD

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.

CWE-733

How to fix

Remediation Available
mbedtlsDebian
Fixed in:2.16.9-0.1+deb11u2CVE-2025-52496
Fixed in:3.6.4-1CVE-2025-52496
Fixed in:3.6.4-1CVE-2025-52496
libmbedcrypto1Ubuntu
Fixed in:2.8.0-1ubuntu0.1~esm1USN-8123-1
libmbedcrypto3Ubuntu
Fixed in:2.16.4-1ubuntu2+esm1USN-8123-1
libmbedcrypto7Ubuntu
Fixed in:2.28.0-1ubuntu0.1~esm1USN-8123-1
libmbedcrypto7t64Ubuntu
Fixed in:2.28.8-1ubuntu0.1~esm1USN-8123-1
libmbedtls-devUbuntu
Fixed in:2.8.0-1ubuntu0.1~esm1USN-8123-1
Fixed in:2.16.4-1ubuntu2+esm1USN-8123-1
Fixed in:2.28.0-1ubuntu0.1~esm1USN-8123-1
Fixed in:2.28.8-1ubuntu0.1~esm1USN-8123-1
libmbedtls10Ubuntu
Fixed in:2.8.0-1ubuntu0.1~esm1USN-8123-1
libmbedtls12Ubuntu
Fixed in:2.16.4-1ubuntu2+esm1USN-8123-1
libmbedtls14Ubuntu
Fixed in:2.28.0-1ubuntu0.1~esm1USN-8123-1
libmbedtls14t64Ubuntu
Fixed in:2.28.8-1ubuntu0.1~esm1USN-8123-1
libmbedx509-0Ubuntu
Fixed in:2.8.0-1ubuntu0.1~esm1USN-8123-1
Fixed in:2.16.4-1ubuntu2+esm1USN-8123-1
libmbedx509-1Ubuntu
Fixed in:2.28.0-1ubuntu0.1~esm1USN-8123-1
libmbedx509-1t64Ubuntu
Fixed in:2.28.8-1ubuntu0.1~esm1USN-8123-1
mbedtlsUbuntu
Fixed in:2.8.0-1ubuntu0.1~esm1USN-8123-1
Fixed in:2.16.4-1ubuntu2+esm1USN-8123-1
Fixed in:2.28.0-1ubuntu0.1~esm1USN-8123-1
Fixed in:2.28.8-1ubuntu0.1~esm1USN-8123-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeChanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityNone

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

Exploit Intelligence

0.19%probability of exploitation in 30 days
9thpercentile

Low risk: more likely to be exploited than 9% of all known CVEs.

References

Exploit1
Other references1
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-03.