Description
A padding oracle exists in wolfSSL's PKCS7 CBC decryption that could allow an attacker to recover plaintext through repeated decryption queries with modified ciphertext. In previous versions of wolfSSL the interior padding bytes are not validated.
References (1)
Core 1
Core References
Scores
CVSS v3
5.3
EPSS
0.0011
EPSS Percentile
1.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-354
Status
published
Products (2)
wolfSSL/wolfSSL
< 5.9.0
wolfssl/wolfssl
< 5.9.0
Published
Apr 09, 2026
Tracked Since
Apr 10, 2026