CVE-2026-92853
Out-of-bounds Read via a Zero-length TLS 1.3 Certificate Message in NetX Secure
- State
- Published
- Severity
- 8.7 High
- Published
- Oct 20, 2026
- Updated
- Oct 20, 2026
- Reserved
- Sep 23, 2026
Description
The TLS 1.3 Certificate-message parser in NetX Secure decrements the message length to skip a context byte without first establishing that the message has a byte to skip. A zero-length Certificate message therefore wraps the unsigned length to `0xFFFFFFFF`, which makes the bounds check that follows vacuous and sends the parser reading past the session packet buffer.
The trigger is a four-byte handshake header and requires no cryptographic validity. It is reachable pre-authentication.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | eclipse |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Eclipse ThreadX - NetX DuoEclipse Foundation |
|
References
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