CVE-2023-6936
Heap-buffer over-read with WOLFSSL_CALLBACKS
- State
- Published
- Severity
- 5.3 Medium
- Published
- Feb 20, 2024
- Updated
- Mar 26, 2025
- Reserved
- Dec 18, 2023
Description
In wolfSSL prior to 5.6.6, if callback functions are enabled (via the WOLFSSL_CALLBACKS flag), then a malicious TLS client or network attacker can trigger a buffer over-read on the heap of 5 bytes (WOLFSSL_CALLBACKS is only intended for debugging).
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | wolfSSL |
Weaknesses
- CWE-126 Buffer Over-read
Affected Products
| Product | Versions |
|---|---|
wolfSSLwolfSSL |
|
References
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.