What is GHSA-rjr3-53fv-wjrf?

GHSA-rjr3-53fv-wjrf is a security advisory published by GitHub Security Advisories with Low severity. An out-of-bounds read in the NTS-KE client response parser (nts_client_process_response_core) in...

Which CVE IDs does GHSA-rjr3-53fv-wjrf cover?

GHSA-rjr3-53fv-wjrf covers the following CVE IDs: CVE-2026-121505. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-rjr3-53fv-wjrf?

GHSA-rjr3-53fv-wjrf has a CVSS v3 base score of 3.7, published by GitHub Security Advisories.

GHSA-rjr3-53fv-wjrfLowCVSS 3.7

An out-of-bounds read in the NTS-KE client response parser (nts_client_process_response_core) in...

Vendor

GitHub Security Advisories

Published

November 3, 2026

Last Modified

November 3, 2026

🔗 CVE IDs covered (1)

CVE-2026-121505 →

📋 Description

An out-of-bounds read in the NTS-KE client response parser (nts_client_process_response_core) in NTPsec before 1.2.4 allows a malicious NTS-KE server to read the client's stack memory, including pointers that defeat ASLR, which the client then sends in cleartext as NTS cookies, via an NTS-KE record whose declared length exceeds the data received.

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-121505
https://gitlab.com/NTPsec/ntpsec/-/commit/caf0eb5df3c6ddbfc2941389bff0f9146835c021
https://gitlab.com/NTPsec/ntpsec/-/work_items/836
https://gitlab.com/NTPsec/ntpsec/-/work_items/902
https://github.com/advisories/GHSA-rjr3-53fv-wjrf