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VULNERABILITIES

CVE-2026-5504 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/wolfSSL/wolfssl/pull/10088 [email protected]Issue TrackingPatch

Weakness Enumeration

CWE-IDCWE NameSource
CWE-354Improper Validation of Integrity Check Value[email protected]

Affected Products

ProductVersions
wolfssl wolfssl
<= 5.9.0

CPE

  • cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-5504
NVD Published Date:
Apr 9, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-5504 Details - Not Deferred