CVE-2025-49087

CVSS 4 MEDIUMEPSS 0.4%CWE-385

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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

Affected products

Mbed · mbedtls

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References

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