CVE-2025-49087
MEDIUMMbed TLS 3.6.1-3.6.3 - Covert Timing Channel via PKCS#7 Padding Removal
Title source: llmDescription
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 (2)
Core 2
Core References
Exploit, Third Party Advisory
https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-security-advisory-2025-06-5.md
Scores
CVSS v3
4.0
EPSS
0.0043
EPSS Percentile
62.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-385
Status
published
Products (1)
arm/mbed_tls
3.6.1 - 3.6.4
Published
Jul 20, 2025
Tracked Since
Feb 18, 2026