CVE-2025-48965

low-risk

Published 2025-07-20

Mbed TLS before 3.6.4 has a NULL pointer dereference because mbedtls_asn1_store_named_data can trigger conflicting data with val.p of NULL but val.len greater than zero.

Do I need to act?

0.04% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 4.0/10 Medium

NETWORK / HIGH complexity

Affected Products (1)

Mbed Tls

Affected Vendors

Arm

References (3)

Mitigation https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-s...

Vendor Advisory https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/

https://lists.debian.org/debian-lts-announce/2025/08/msg00013.html

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low-risk

Severity 13/34 · Low

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal