Vulnerability Description
PocketSphinx is a small speech recognizer. Prior to 5.1.1, the trie language-model loaders in src/lm/ngram_model_trie.c do not adequately validate boundary conditions in ARPA, DMP, and binary format headers, and the acoustic-model loaders in src/mdef.c and src/util/bio.c use sscanf with unbounded string fields. Loading an invalid, corrupted, or malicious language or acoustic model can therefore cause stack or heap buffer overflows and memory corruption. An attacker who can write to a directory selected by POCKETSPHINX_PATH can replace or add a model file that PocketSphinx later loads; users of PocketSphinx 5prealpha have no backported patch and must migrate to the fixed release. This issue is fixed in version 5.1.1.
Related Weaknesses (CWE)
References
- https://github.com/cmusphinx/pocketsphinx/commit/2a3c03788a9973eff548664334fb781
- https://github.com/cmusphinx/pocketsphinx/releases/tag/v5.1.1
- https://github.com/cmusphinx/pocketsphinx/security/advisories/GHSA-56r5-2p2f-7cx
FAQ
What is CVE-2026-54559?
CVE-2026-54559 is a documented vulnerability. PocketSphinx is a small speech recognizer. Prior to 5.1.1, the trie language-model loaders in src/lm/ngram_model_trie.c do not adequately validate boundary conditions in ARPA, DMP, and binary format h...
How severe is CVE-2026-54559?
CVSS scoring is not yet available for CVE-2026-54559. Check NVD for updates.
Is there a patch for CVE-2026-54559?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.