Out-of-bounds Write Affecting hamlib package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published19 Sept 2026
- disclosed17 Sept 2026
Introduced: 17 Sep 2026
NewCVE-2026-54634 (opens in a new tab)How to fix?
There is no fixed version for Echo:latest hamlib.
NVD Description
Note: Versions mentioned in the description apply only to the upstream hamlib package and not the hamlib package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
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.
References
- https://advisory.echohq.com/cve/CVE-2026-54634
- 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