# CVE-2026-2645

## Summary

- **CVE ID:** CVE-2026-2645
- **Severity:** MEDIUM
- **CVSS Score:** 5.5 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P)
- **CWE:** CWE-358
- **Published:** Mar 19, 2026
- **Last Modified:** Mar 19, 2026

## Description

In wolfSSL 5.8.2 and earlier, a logic flaw existed in the TLS 1.2 server state machine implementation. The server could incorrectly accept the CertificateVerify message before the ClientKeyExchange message had been received. This issue affects wolfSSL before 5.8.4 (wolfSSL 5.8.2 and earlier is vulnerable, 5.8.4 is not vulnerable). In 5.8.4 wolfSSL would detect the issue later in the handshake. 5.9.0 was further hardened to catch the issue earlier in the handshake.

## Affected Products

- wolfSSL — wolfSSL (0)

## References

- [CNA](https://github.com/wolfSSL/wolfssl/pull/9694)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.13%
- **EPSS Percentile:** 2.6

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._