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PatchSiren cyber security CVE debrief

CVE-2026-0270 Palo Alto Networks CVE debrief

A path traversal vulnerability in Palo Alto Networks Cortex XSOAR engine software running on Linux allows an unauthenticated attacker on an adjacent network, with the ability to intercept and manipulate network response traffic via a man-in-the-middle (MITM) attack, to write arbitrary files to the host.

Vendor
Palo Alto Networks
Product
Cortex XSOAR
CVSS
MEDIUM 4.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-07-10
Advisory published
2026-06-10
Advisory updated
2026-07-10

Who should care

Users of Palo Alto Networks Cortex XSOAR engine software running on Linux, particularly those with exposure to adjacent networks.

Technical summary

The vulnerability, tracked as CVE-2026-0270, is a path traversal issue in Palo Alto Networks Cortex XSOAR engine software running on Linux. This vulnerability allows an unauthenticated attacker on an adjacent network to write arbitrary files to the host by intercepting and manipulating network response traffic via a man-in-the-middle (MITM) attack.

Defensive priority

MEDIUM

Recommended defensive actions

  • Apply patches or updates provided by Palo Alto Networks to address the vulnerability.
  • Implement network segmentation and isolation to limit access to the affected systems.
  • Monitor network traffic for suspicious activity and implement intrusion detection and prevention systems.
  • Consider implementing a web application firewall (WAF) to detect and prevent attacks.

Evidence notes

The CVE-2026-0270 vulnerability has a CVSS score of 4.8 and is considered MEDIUM severity. The vulnerability was published on June 10, 2026, and modified on June 11, 2026.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-0270 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-0270

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-0270 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-0270

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.