Description
Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs omits authorization checks in IndexesApi.listPacketIndex, IndexesApi.listEventIndex, Cop1Api.disable, Cop1Api.resume, Cop1Api.initialize, Cop1Api.updateConfig, and TimeApi.setTime. An authenticated low-privilege user can read packet and event index metadata without ObjectPrivilegeType.ReadPacket, alter COP-1 link state without SystemPrivilege.ControlLinks, and manipulate simulation time. These operations can disclose telemetry metadata, disrupt telecommand handling, and affect system integrity and availability. This issue is fixed in versions 5.12.8 and 5.13.2.
References6
- github.com/yamcs/yamcs/commit/405139afa6094dfaf63ac17f32df1f808…
- github.com/yamcs/yamcs/commit/493563679f838b86f3cdc5da9451d4a05…
- github.com/yamcs/yamcs/releases/tag/yamcs-5.12.8
- github.com/yamcs/yamcs/releases/tag/yamcs-5.13.2
- github.com/yamcs/yamcs/security/advisories/GHSA-962x-ccwf-8x6p
- github.com/yamcs/yamcs/security/advisories/GHSA-962x-ccwf-8x6p
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 45 · as of 8 November 2026
- CWE
- CWE-862
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.