MEDIUM

CVE-2026-54559

2026-09-14 CVSS v4.0

CVSS

6.9

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.

Weakness (CWE)

CWE-119 Memory Buffer Bounds Error

CWE-121 Stack-based Buffer Overflow

CWE-122 Heap-based Buffer Overflow

EPSS Score

0.32%

Probability of exploitation in next 30 days

25.5th percentile

References

https://github.com/cmusphinx/pocketsphinx/commit/2a3c03788a9973eff548664334fb781e9f4ad4a5 https://github.com/cmusphinx/pocketsphinx/releases/tag/v5.1.1 https://github.com/cmusphinx/pocketsphinx/security/advisories/GHSA-56r5-2p2f-7cxp

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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