Name: CVE-2026-34877: Execution with Unnecessary Privileges
Creator: Rapid7
Published: 2026-04-02T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-34877, CWE-502, CWE-250, CVSS 9.8, EPSS 0.00075

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.

CVSS Details

CVSS 3.1 Base Score: 9.8
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Freebsd	—	Upgrade mbedtls3Upgrade mbedtls4	Apr 14, 2026	Apr 10, 2026

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CVSS Details

Covered by Rapid7

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