What’s Vulnerable › Vulnerabilities
CVE-2026-92853: Out-of-bounds Read via a Zero-length TLS 1.3 Certificate Message in NetX Secure
- Severity: high (CVSS 8.7 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-20 · updated 2026-10-20
- Weakness: CWE-125
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.
Affected products
- Eclipse Foundation NetX Duo: through 6.5.1.202602
References
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