{"id":"CVE-2026-55093","title":"Tract is a tiny, no-nonsense, self-contained TensorFlow and ONNX inference toolkit","summary":"Tract is a tiny, no-nonsense, self-contained TensorFlow and ONNX inference toolkit. Prior to 0.21.16, 0.22.2, and 0.23.1, tract-nnef uses unchecked usize multiplication in nnef/src/tensors.rs read_tensor for attacker-controlled tensor di…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","cwe":["CWE-125","CWE-190"],"vendor":"sonos","product":"tract","affected":["tract < 0.21.16","tract >= 0.22.0, < 0.22.2","tract >= 0.23.0, < 0.23.1"],"patched":["tract-nnef 0.23.1","tract-nnef 0.22.2","tract-nnef 0.21.16"],"published":"2026-09-14","updated":"2026-09-14","sourceUpdated":"2026-09-14T20:16:47.290","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55093","references":[{"url":"https://github.com/sonos/tract/commit/34c7df2c9bd2a36583e09b52f3e6319bf23102e8","label":"security-advisories@github.com"},{"url":"https://github.com/sonos/tract/commit/828ec20f74c14c0923c7d7f0cff062ed222d630a","label":"security-advisories@github.com"},{"url":"https://github.com/sonos/tract/commit/ee5f019d39fb97f7d4431b883c3ce97b74c28a64","label":"security-advisories@github.com"},{"url":"https://github.com/sonos/tract/releases/tag/0.21.16","label":"security-advisories@github.com"},{"url":"https://github.com/sonos/tract/releases/tag/0.22.2","label":"security-advisories@github.com"},{"url":"https://github.com/sonos/tract/releases/tag/v0.23.1","label":"security-advisories@github.com"},{"url":"https://github.com/sonos/tract/security/advisories/GHSA-x5mv-8wgw-29hg","label":"security-advisories@github.com"},{"url":"https://github.com/sonos/tract/security/advisories/GHSA-x5mv-8wgw-29hg","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/advisories/GHSA-x5mv-8wgw-29hg"}],"tags":["nvd","cve.org","exploit-available","ghsa","rust"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-14T20:09:04.689487Z"},"ecosystem":"rust","ingestedAt":"2026-06-19T03:39:00.798Z","epss":0.00199,"epssPercentile":0.09944,"slug":"CVE-2026-55093","body":"## Overview\n\nTract is a tiny, no-nonsense, self-contained TensorFlow and ONNX inference toolkit. Prior to 0.21.16, 0.22.2, and 0.23.1, tract-nnef uses unchecked usize multiplication in nnef/src/tensors.rs read_tensor for attacker-controlled tensor dimensions, the allocation size, and the reported tensor length. Loading a crafted NNEF archive through model_for_path or model_for_read reaches the default DatLoader and can make the wrapped size check accept a small allocation while data/src/tensor.rs as_slice_unchecked creates a much larger logical slice. Model construction through as_uniform can then read beyond the heap allocation and disclose adjacent data, and later access can terminate the process with a segmentation fault. The affected dense numeric tensor path does not include the independently guarded bool, String, or block-quant paths, and no out-of-bounds write or code execution was demonstrated. This issue is fixed in versions 0.21.16, 0.22.2, and 0.23.1.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-55093)\n\nAffected packages:\n\n- `tract-nnef >= 0.23.0, < 0.23.1`\n- `tract-nnef >= 0.22.0, < 0.22.2`\n- `tract-nnef < 0.21.16`\n\nPatched in:\n\n- `tract-nnef 0.23.1`\n- `tract-nnef 0.22.2`\n- `tract-nnef 0.21.16`\n\nSource: https://github.com/advisories/GHSA-x5mv-8wgw-29hg","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":203283,"id":"CVE-2026-55093","ts":1789416906694,"field":"exploit_available","old":"false","new":"true"}]}