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CVE-2026-0234

Palo Alto Networks Cortex Xsiam vulnerability

9.1 CRITICALEPSS 0.23%
  1. Published13 Apr 2026

Description

An improper verification of cryptographic signature vulnerability exists in Cortex XSOAR and Cortex XSIAM platforms during integration of Microsoft Teams that enables an unauthenticated user to access and modify protected resources.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Palo Alto Networks Cortex Xsiam≥ 1.5.0 < 1.5.52
Palo Alto Networks Cortex Xsoar≥ 1.5.0 < 1.5.52

Remediation

Fixed in
Palo Alto Networks Cortex Xsiam≥ 1.5.52
Palo Alto Networks Cortex Xsoar≥ 1.5.52

References

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Frequently asked

Is CVE-2026-0234 being actively exploited?

CVE-2026-0234 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.23%.

How severe is CVE-2026-0234?

CVE-2026-0234 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.23% probability of exploitation.

Which products are affected by CVE-2026-0234?

Affected products include Palo Alto Networks Cortex Xsiam, Palo Alto Networks Cortex Xsoar.

How do I fix CVE-2026-0234?

Upgrade affected software to a fixed version, for example Palo Alto Networks Cortex Xsiam 1.5.52, Palo Alto Networks Cortex Xsoar 1.5.52 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-0234 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.