CVE-2025-48965

libmbedx509-1t64: Mbed TLS before 3.6.4 has a NULL pointer dereference because mbedtls_asn1_store_named_data can trigger conflicting da...

CVE-2025-48965 is fixed in 12 products on 1 platform, first by libmbedcrypto1 2.8.0-1ubuntu0.1~esm1, released July 20, 2025. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.5
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0057
47th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
libmbedcrypto1 · Ubuntu 18.04.6 LTS (bionic) 2.8.0-1ubuntu0.1~esm1 libmbedcrypto1 2.8.0-1ubuntu0.1~esm1 Jul 20, 2025
libmbedcrypto3 · Ubuntu 20.04 LTS (focal) 2.16.4-1ubuntu2+esm1 libmbedcrypto3 2.16.4-1ubuntu2+esm1 Jul 20, 2025
libmbedcrypto7 · Ubuntu 22.04.1 LTS (jammy) 2.28.0-1ubuntu0.1~esm1 libmbedcrypto7 2.28.0-1ubuntu0.1~esm1 Jul 20, 2025
libmbedcrypto7t64 · Ubuntu 24.04.5 LTS (noble) 2.28.8-1ubuntu0.1~esm1 libmbedcrypto7t64 2.28.8-1ubuntu0.1~esm1 Jul 20, 2025
libmbedtls10 · Ubuntu 18.04.6 LTS (bionic) 2.8.0-1ubuntu0.1~esm1 libmbedtls10 2.8.0-1ubuntu0.1~esm1 Jul 20, 2025
libmbedtls12 · Ubuntu 20.04 LTS (focal) 2.16.4-1ubuntu2+esm1 libmbedtls12 2.16.4-1ubuntu2+esm1 Jul 20, 2025
libmbedtls14 · Ubuntu 22.04.1 LTS (jammy) 2.28.0-1ubuntu0.1~esm1 libmbedtls14 2.28.0-1ubuntu0.1~esm1 Jul 20, 2025
libmbedtls14t64 · Ubuntu 24.04.5 LTS (noble) 2.28.8-1ubuntu0.1~esm1 libmbedtls14t64 2.28.8-1ubuntu0.1~esm1 Jul 20, 2025
libmbedx509-0 · Ubuntu 18.04.6 LTS (bionic) 2.8.0-1ubuntu0.1~esm1 libmbedx509-0 2.8.0-1ubuntu0.1~esm1 Jul 20, 2025
libmbedx509-0 · Ubuntu 20.04 LTS (focal) 2.16.4-1ubuntu2+esm1 libmbedx509-0 2.16.4-1ubuntu2+esm1 Jul 20, 2025
libmbedx509-1 · Ubuntu 22.04.1 LTS (jammy) 2.28.0-1ubuntu0.1~esm1 libmbedx509-1 2.28.0-1ubuntu0.1~esm1 Jul 20, 2025
libmbedx509-1t64 · Ubuntu 24.04.5 LTS (noble) 2.28.8-1ubuntu0.1~esm1 libmbedx509-1t64 2.28.8-1ubuntu0.1~esm1 Jul 20, 2025
mbedtls · Debian 13.5 (trixie) 3.6.4-1 DEBIAN-CVE-2025-48965 Jul 20, 2025
mbedtls · Debian 14 3.6.4-1 DEBIAN-CVE-2025-48965 Jul 20, 2025
mbedtls · opensuse-leap 16.0 3.6.6-bp160.1.1 OPENSUSE-SU-2026:21144-1 Jun 22, 2026

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