PT-2026-41580 · Julia · Mbedtls Jll

Published 2026-05-07 · Updated 2026-05-07

OSV

CVSS v3.1

9.8

Critical

Base vector

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

An issue was discovered in Mbed TLS versions from 2.19.0 up to 3.6.5, Mbed TLS 4.0.0. Insufficient protection of serialized SSL context or session structures allows an attacker who can modify the serialized structures to induce memory corruption, leading to arbitrary code execution. This is caused by Incorrect Use of Privileged APIs.

Fix

Related Identifiers

JLSEC-2026-467

Affected Products

Mbedtls Jll

References · 3

• https://osv.dev/vulnerability/JLSEC-2026-467 · Vendor Advisory
• https://mbed-tls.readthedocs.io/en/latest/security-advisories · Note
• https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-serialized-data · Note