Eclipse ThreadX up to 6.5.1.202602 TLS 1.3 Certificate-message Parser memory corruption

Summaryinfo

A vulnerability categorized as very critical has been discovered in Eclipse ThreadX up to 6.5.1.202602. Affected is an unknown function of the component TLS 1.3 Certificate-message Parser. The manipulation results in memory corruption. This vulnerability is known as CVE-2026-92853. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as very critical, was found in Eclipse ThreadX up to 6.5.1.202602. Affected is an unknown functionality of the component TLS 1.3 Certificate-message Parser. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-92853 since 09/23/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/20/2026).

Upgrading to version 6.5.2.202603 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Eclipse

Name

• ThreadX

Version

• 6.5.1.202602

License

• open-source

CPE 2.3info

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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