CVE-2026-121505
lowAn 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 t…
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.
CVSS
3.7
3.7 (CVSS v3.1)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Severity source: NVD CVSS v3.1 (cve@gitlab.com)
Timeline (UTC)
Published: 2026-11-03 15:17
Modified: 2026-11-03 19:18
NVD status: Awaiting Analysis
Last synced 1 day ago
Verified against the source API 2026-11-03 19:20 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://gitlab.com/NTPsec/ntpsec/-/commit/caf0eb5df3c6ddbfc2941389bff0f9146835c021 cve@gitlab.com
- https://gitlab.com/NTPsec/ntpsec/-/work_items/836 cve@gitlab.com
- https://gitlab.com/NTPsec/ntpsec/-/work_items/902 cve@gitlab.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 19:20 UTC · record ↗