CVE-2026-0304

Authenticated root code execution via mount-action argument injection

Published Sep 10, 2026 · Updated Sep 11, 2026

Argument injection in Palo Alto Networks Cortex XDR Broker VM 20.0.96 through 32.0.51 allows remote authenticated users to execute code as root. Palo Alto Networks identifies cloud-delivered mount-action processing as the exposed locus and classifies the flaw as improper neutralization of command argument delimiters. Exploitation requires low-privileged authentication and man-in-the-middle access; no special configuration is required on brokers processing those actions.

CVSS severity7.5
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Argument injection in Palo Alto Networks Cortex XDR Broker VM 20.0.96 through 32.0.51 allows remote authenticated users to execute code as root. Palo Alto Networks identifies cloud-delivered mount-action processing as the exposed locus and classifies the flaw as improper neutralization of command argument delimiters. Exploitation requires low-privileged authentication and man-in-the-middle access; no special configuration is required on brokers processing those actions.

The record

CVE
CVE-2026-0304
Published
Sep 10, 2026
Updated
Sep 11, 2026
Vendor
Palo Alto Networks
Product
Cortex XDR Broker VM
Classifications
CWE-88, CAPEC-126, T1068, T1557
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 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=20.0.96 <32.0.52 changes=[{"at":"32.0.52","status":"unaffected"}]

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Palo Alto Networks · Cortex XDR Broker VMversion=20.0.96 <32.0.52 changes=[{"at":"32.0.52","status":"unaffected"}]

Published CVSS scores

4.8Palo Alto NetworksCVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:U/AU:N/R:U/V:D/RE:M/U:Amber
7.5Palo Alto NetworksCVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

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)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
CAPEC-126Path Traversal
T1068Exploitation for Privilege Escalation
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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