ntpsec: An out-of-bounds read in the NTS-KE client response parser (nts_client_process_response_core) in NTPsec before 1.2.4...
CVE-2026-121505 is fixed in ntpsec on 1 platform by DEBIAN-CVE-2026-121505 (version 1.2.4+dfsg-1), released November 6, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| ntpsec · Debian 14 | 1.2.4+dfsg-1 | DEBIAN-CVE-2026-121505 | Nov 6, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.