Bug 2565815 (CVE-2026-121505) - CVE-2026-121505 ntpsec: ntpsec: Information disclosure via malformed NTS-KE response record
Summary: CVE-2026-121505 ntpsec: ntpsec: Information disclosure via malformed NTS-KE r...
Keywords:
Status: NEW
Alias: CVE-2026-121505
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-03 14:36 UTC by OSIDB Bzimport
Modified: 2026-11-05 11:04 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-11-03 14:36:56 UTC 
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.
Note You need to log in before you can comment on or make changes to this bug.