CVE-2026-54559 (GCVE-0-2026-54559)
Vulnerability from cvelistv5 – Published: 2026-09-14 20:07 – Updated: 2026-09-15 19:30
VLAI
EPSS
VEX
Title
PocketSphinx: Buffer overflows in language and acoustic model loading code
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 19:30 UTC
CWE
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cmusphinx/pocketsphinx/securit… | x_refsource_CONFIRM |
| https://github.com/cmusphinx/pocketsphinx/commit/… | x_refsource_MISC |
| https://github.com/cmusphinx/pocketsphinx/release… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| cmusphinx | pocketsphinx |
Affected:
< 5.1.1
|
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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