CVE-2026-3230
Improper key_share validation in TLS 1.3 HelloRetryRequest
- State
- Published
- Severity
- 1.2 Low
- Published
- Mar 19, 2026
- Updated
- Mar 20, 2026
- Reserved
- Feb 25, 2026
Description
Missing required cryptographic step in the TLS 1.3 client HelloRetryRequest handshake logic in wolfSSL could lead to a compromise in the confidentiality of TLS-protected communications via a crafted HelloRetryRequest followed by a ServerHello message that omits the required key_share extension, resulting in derivation of predictable traffic secrets from (EC)DHE shared secret. This issue does not affect the client's authentication of the server during TLS handshakes.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 1.2 Low | CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/AU:Y/R:A/V:D/U:Clear | wolfSSL |
Weaknesses
- CWE-20 Improper Input Validation Improper Input Validation
Affected Products
| Product | Versions |
|---|---|
wolfSSLwolfSSL |
|
References
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