CVE-2025-49087

LOW 3.7CVE-2025-49087 · Published 20/07/2025 · updated 17/06/2026

In short

CVE-2025-49087 is a LOW (CVSS 3.7) vulnerability affecting mbed tls (trustedfirmware).
Chance of exploitation in the next 30 days (EPSS): 0.47%, higher than 40.9% of all vulnerabilities.
Fix: update to 3.6.4 or later.

Package	Affected versions	Patched versions
mbed tls trustedfirmware	`≥ 3.6.1, < 3.6.4`	`3.6.4`

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.

References

Mbed-TLS/mbedtls-docs · Exploit
mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories · Vendor Advisory

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Package

Affected versions

Patched versions

mbed tls

trustedfirmware

≥ 3.6.1, < 3.6.4

3.6.4

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