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Cortex XSOAR/XSIAM CVE-2026-0313

| EUVDEUVD-2026-101674 MEDIUM
OS Command Injection (CWE-78)
2026-10-14 palo_alto GHSA-mxh3-wwwc-mx62
6.1
CVSS 4.0 · Vendor: palo_alto
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate as XSOAR/XSIAM administrator
  2. Delivery
    Submit crafted input to OS Query content pack
  3. Exploit
    Inject unsanitized OS command
  4. Execution
    Execute arbitrary commands on remote endpoints
  5. Impact
    Compromise managed endpoint fleet

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization OS command sanitization, avoid shell exec
MITRE ATT&CK

2 techniques across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Requires an authenticated administrator account on Cortex XSOAR or Cortex XSIAM (PR:H) and the OS Query content pack must be in use for querying/managing remote endpoints. The attacker abuses that content pack's command-building logic to inject OS commands that run on the managed remote endpoints. Limiting factors: full administrative privilege on the SOAR/SIEM platform is mandatory (no unauthenticated or low-privilege path), no user interaction is required (UI:N), and exploitation is confined to environments that have deployed and operate the OS Query content pack rather than any default install.

Impact

This is a legitimate but not top-tier priority. The CVSS 4.0 base score of 6.1 (MEDIUM) is held down primarily by PR:H - the attacker must already be an authenticated administrator of the Cortex XSOAR/XSIAM platform. The input vector carries E:U (Exploit Unproven), there is no CISA KEV listing, no POC referenced, and no EPSS score was supplied, so all exploitation-maturity signals point to low immediate real-world risk: no public exploit identified at time of analysis and no evidence of active exploitation. Counterbalancing this, the technical impact is high across all three dimensions (VC:H/VI:H/VA:H) and the capability - arbitrary OS command execution on remote managed endpoints - is severe once the precondition is met, effectively turning a compromised or malicious SOAR administrator into a lateral-movement engine. In short: real issue, high technical impact, but the PR:H gate and unproven exploit status make it a patch-on-normal-cadence item rather than an emergency, unless the XSOAR/XSIAM admin trust boundary is weak in your environment. Note the possible scope question flagged below: the vendor set SC/SI/SA:N even though commands execute on remote endpoints - defenders should treat the blast radius as larger than the SOAR server itself.

Exploit ScenarioDerived

An authenticated Cortex XSOAR/XSIAM administrator (or an attacker who has phished/compromised such an account) crafts malicious input to the OS Query content pack, which fails to sanitize it before building an OS command. The injected payload is executed as an arbitrary OS command on the remote endpoints the platform manages, giving full command execution across the fleet. No public exploit code is known, and because it is network-reachable with low attack complexity, exploitation is straightforward once administrator access is held.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.8% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 14, 2026

Arbitrary OS command execution on managed remote endpoints is possible in Palo Alto Networks Cortex XSOAR and Cortex XSIAM deployments that use the OS Query content pack, where an authenticated administrator can exploit command injection in the pack's command-building logic. Affected environments are limited to those with the OS Query content pack installed and operational; exploitation requires high administrative privileges and no user interaction. No public exploit has been identified at time of analysis, and the risk is assessed as legitimate but not top-tier priority given the privileged access prerequisite.

RemediationAI

Apply the fixed OS Query content pack version from the Palo Alto Networks advisory at https://security.paloaltonetworks.com/CVE-2026-0313 once available; the input data does not provide an exact patched version, so consult the advisory for the precise update path. If immediate patching is not possible, reduce exposure by removing or disabling the OS Query content pack where endpoint querying is not required, accepting the operational loss of that capability. Because exploitation requires a highly privileged administrator account, enforce least privilege for XSOAR/XSIAM administrators, require MFA, review and limit admin accounts, restrict management interface access to trusted networks, and monitor audit logs for unexpected OS query or command activity. These controls lower risk but do not fix the underlying command injection.

Affected VersionsENISA

Cortex XSOAR OS Query 0 <1.0.17
Cortex XSIAM OS Query 0 <1.0.17

Affected Packages

euvd cortex_xsiam_os_query fix: 1.0.17
euvd cortex_xsoar_os_query fix: 1.0.17

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The issue is a CWE-78 OS command injection in the OS Query content pack for Palo Alto Networks Cortex XSOAR and Cortex XSIAM. The content pack is used to query and manage remote endpoints, and its command-building logic does not adequately neutralize special elements when constructing OS commands. An authenticated administrator, consistent with PR:H in the provided CVSS vector, can supply crafted input that escapes the intended command context and executes arbitrary OS commands on managed remote endpoints. The independent assessment uses CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, reinforcing that high privileges are required. CPE entries cpe:2.3:a:palo_alto_networks:cortex_xsoar_os_query:*:*:*:*:*:*:*:* and cpe:2.3:a:palo_alto_networks:cortex_xsiam_os_query:*:*:*:*:*:*:*:* identify the affected content packs; the vulnerability is confined to environments that have deployed and operate this pack, not to default XSOAR/XSIAM installs. No KEV or public POC signal is present in the input data.

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Severity by source

Vendor (palo_alto) PRIMARY 6.1 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
vuln.today AI 7.2 HIGH

Network-reachable with low complexity but requires administrator privilege (PR:H); full C/I/A impact from arbitrary OS command execution; scope kept Unchanged to match vendor despite remote-endpoint execution.

3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (palo_alto).

CVSS VectorVendor: palo_alto

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
None
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
High
Vulnerable system: Availability
High
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

2
Patch available
Oct 14, 2026 - 22:49 EUVD
CVE Published
Oct 14, 2026 - 20:27 cve.org
MEDIUM 6.1

DescriptionCVE.org

A command injection vulnerability in Palo Alto Networks Cortex XSOAR and Cortex XSIAM OS Query content pack enables an authenticated administrator to execute arbitrary OS commands on remote endpoints.

Threat Intelligence Overview

EPSS Score
0.8%
Top 43% exploitable
Prevalence
Medium
enterprise SOAR/SIEM platform, common in SOCs but not everywhere
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.8%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Total

Priority Score

31
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +30
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

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