CVE-2025-49087

State: Published
Severity: 4.0 Medium
Published: Jul 20, 2025
Updated: Jul 21, 2025
Reserved: May 30, 2025

Description

In Mbed TLS 3.6.1 through 3.6.3 before 3.6.4, a timing discrepancy in block cipher padding removal allows an attacker to recover the plaintext when PKCS#7 padding mode is used.

Scores

CVSS	Score	Vector	Source
3.1	4.0 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N	mitre

Weaknesses

CWE-385 Covert Timing Channel

Affected Products

Product	Versions
mbedtlsMbed	3.6.1 to before 3.6.4Affected

References

https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/
https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-security-advisory-2025-06-5.md

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