CVE-2026-15442
Heap use-after-free on read during bidirectional (D)TLS shutdown
- State
- Published
- Severity
- 2.3 Low
- Published
- Sep 27, 2026
- Updated
- Sep 30, 2026
- Reserved
- Jul 10, 2026
Description
In all builds that make use of (D)TLS, including default builds, there is a series of conditional states during the TLS shutdown which could lead to a heap-use-after free. If an application ended up getting a partial wolfSSL_read() which is sometimes caused by a small user buffer passed in, then called wolfSSL_shutdown for a bidirectional close and attempted to wolfSSL_read() again while the peer continues trying to send data during the shutdown it would lead to a state where a potential heap-use-after free happened.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 2.3 Low | CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | wolfSSL |
Weaknesses
- CWE-416 Use After Free
Affected Products
| Product | Versions |
|---|---|
wolfSSLwolfSSL |
|
References
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