CVE-2026-54634
Description
Hamlib is a ham radio control library for radios, rotators, and amplifiers. Prior to 4.7.2, the unauthenticated rigctld send_raw command on TCP port 4532 reaches rigctl_send_raw() in tests/rigctl_parse.c, which writes a NUL byte at buf[buf_len + 1] outside its 200-byte stack buffer, and rig_send_raw() in src/rig.c, which copies reply_len - 1 bytes instead of the actual nbytes received. A remote client can send the CR terminator with a short payload to trigger both flaws in one command under the default no-password configuration. The out-of-bounds write can crash the daemon or corrupt adjacent stack memory, while the oversized copy can return up to 198 bytes of uninitialized stack data to the client. This issue is fixed in version 4.7.2.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://github.com/Hamlib/Hamlib/commit/3e3f78fc7732a4ce0da97b7a86d6d9fd9bd117c4
- https://github.com/Hamlib/Hamlib/commit/47171005bf041f520bb134edf796b9f6fc27e6bf
- https://github.com/Hamlib/Hamlib/commit/587f7bb2c6442e36ed5b6021f6ee9951daf1576b
- https://github.com/Hamlib/Hamlib/commit/a3a7f00d759edadbe195d112dc89006ae8db146e
- https://github.com/Hamlib/Hamlib/releases/tag/4.7.2
- https://github.com/Hamlib/Hamlib/security/advisories/GHSA-gpcq-c37x-pr46
CWEs
CWE-787 CWE-908
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.