Vulnerability in Wolfssl
CVE-2022-25638
In wolfSSL before 5.2.0, certificate validation may be bypassed during attempted authentication by a TLS 1.3 client to a TLS 1.3 server. This occurs when the sig_algo field differs between the certificate_verify message and the certificate message.
Vulnerability class: Improper Certificate Validation
EPSS: 0.006 (46.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
Affected products
- Wolfssl
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-25638?
- CVE-2022-25638 is a medium-severity vulnerability in Wolfssl, classified under Improper Certificate Validation. CVSS score: 6.5/10. Published 2022-02-24.
- How severe is CVE-2022-25638?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2022-25638 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.