CVE-2025-49087

4.0 MEDIUM

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 plai...

Published: 2025-07-20 · Last updated: 2026-06-05

Severity and scoring

CVSS: 4.0 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
CWE: CWE-385

Affected products

Vendor	Product
trustedfirmware	mbed_tls

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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2025-49087
[Exploit reference]https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-security-advisory-2025-06-5.md
[Vendor advisory]https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/

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