CVE-2026-55093

Heap disclosure via overflowing tensor dimensions

Published Sep 14, 2026 · Updated Sep 14, 2026

Out-of-bounds read in Sonos tract before 0.21.16, 0.22.0 through 0.22.1, and 0.23.0 allows attackers to disclose heap data. tract-nnef read_tensor multiplies untrusted dimensions with unchecked usize arithmetic, allowing wrapped lengths to pass validation and exceed the allocation. A crafted NNEF archive must be loaded by an application; model construction can expose adjacent heap data, while later slice access can crash the process, with no demonstrated write or code execution.

CVSS severity6.1
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Sonos tract before 0.21.16, 0.22.0 through 0.22.1, and 0.23.0 allows attackers to disclose heap data. tract-nnef read_tensor multiplies untrusted dimensions with unchecked usize arithmetic, allowing wrapped lengths to pass validation and exceed the allocation. A crafted NNEF archive must be loaded by an application; model construction can expose adjacent heap data, while later slice access can crash the process, with no demonstrated write or code execution.

The record

CVE
CVE-2026-55093
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
Sonos
Product
tract
Classifications
CWE-190, CWE-125
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.21.16
  2. Affected versionversion=>= 0.22.0, < 0.22.2
  3. Affected versionversion=>= 0.23.0, < 0.23.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Sonos · tractversion=< 0.21.16; version=>= 0.22.0, < 0.22.2; version=>= 0.23.0, < 0.23.1

Published CVSS scores

6.1GitHubCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
CWE-125Out-of-bounds Read

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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