CVE-2025-4922Network attack vector

Privilege escalation via prefix-matched ACL policies

Published Jun 11, 2025 · Updated Jun 11, 2025

Incorrect privilege assignment in HashiCorp Nomad allows remote authenticated users to run privileged jobs through ACL policy shadowing. The policy-by-job index lookup uses prefix matching, so a new job such as test-job-2 inherits policy rules assigned to test-job. Access sufficient to create the prefixed job is required; inherited rules can authorize privileged workloads without a policy explicitly assigned to that job.

CVSS severity8.1
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect privilege assignment in HashiCorp Nomad allows remote authenticated users to run privileged jobs through ACL policy shadowing. The policy-by-job index lookup uses prefix matching, so a new job such as test-job-2 inherits policy rules assigned to test-job. Access sufficient to create the prefixed job is required; inherited rules can authorize privileged workloads without a policy explicitly assigned to that job.

The record

CVE
CVE-2025-4922
Published
Jun 11, 2025
Updated
Jun 11, 2025
Vendor
HashiCorp
Product
Nomad
Classifications
CWE-266
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 11, 2025Record 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=1.4.0 <1.10.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

HashiCorp · Nomadversion=1.4.0 <1.10.2
HashiCorp · Nomad Enterpriseversion=1.4.0 <1.10.2 changes=[{"at":"1.9.10","status":"unaffected"},{"at":"1.8.14","status":"unaffected"}]

Published CVSS scores

8.1HashiCorp Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment

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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