---
title: "CVE-2026-82429: Apache Storm - Privilege Escalation"
description: "Apache Storm < 3.1.0 contains a privilege escalation caused by TOCTOU race condition in setuid-root worker-launcher binary using lchown and chmod on re-resolved paths, letting untrusted tenant escalate privileges by symlink attack, exploit requires running untrusted topology code on supervisor node."
url: https://panop.io/threat-heartbeat/CVE-2026-82429/
---

# CVE-2026-82429 Apache Storm - Privilege Escalation

Apache Storm < 3.1.0 contains a privilege escalation caused by TOCTOU race condition in setuid-root worker-launcher binary using lchown and chmod on re-resolved paths, letting untrusted tenant escalate privileges by symlink attack, exploit requires running untrusted topology code on supervisor node.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.13% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-82429)

## Details

Type

Privilege Escalation

Impact

Privilege Escalation

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

14 September 2026

Updated

15 October 2026

Weakness

[CWE-367](https://cwe.mitre.org/data/definitions/367.html)

## Vendor fix

Upgrade to Apache Storm version 3.1.0 or later where privileged operations use file descriptors instead of pathnames.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-82429](https://nvd.nist.gov/vuln/detail/CVE-2026-82429)
- [https://lists.apache.org/thread/9vjqrt28g0mxg304vw6pw46cx72v4rvq](https://lists.apache.org/thread/9vjqrt28g0mxg304vw6pw46cx72v4rvq)
- [http://www.openwall.com/lists/oss-security/2026/09/13/9](http://www.openwall.com/lists/oss-security/2026/09/13/9)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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