Vulnerability Description
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.
CVSS Score
4.0
MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Arm | Mbed Tls | < 3.6.4 |
Related Weaknesses (CWE)
References
- https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-sMitigationThird Party Advisory
- https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2025/08/msg00013.html
FAQ
What is CVE-2025-48965?
CVE-2025-48965 is a vulnerability with a CVSS score of 4.0 (MEDIUM). 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.
How severe is CVE-2025-48965?
CVE-2025-48965 has been rated MEDIUM with a CVSS base score of 4.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-48965?
Check the references section above for vendor advisories and patch information. Affected products include: Arm Mbed Tls.