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CVE-2026-0263

Palo Alto Networks PAN-OS remote code execution

9.8 CRITICALEPSS 0.37%
  1. Published13 May 2026

Description

A buffer overflow vulnerability in the IKEv2 processing of Palo Alto Networks PAN-OS® software allows an unauthenticated network-based attacker to execute arbitrary code with elevated privileges on the firewall, or cause a denial of service (DoS) condition. Panorama, Cloud NGFW, and Prisma® Access are not impacted by these vulnerabilities.

CVSS 3.1 breakdown

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

Affected products

Palo Alto Networks PAN-OS≥ 11.1.0 < 11.1.4 · ≥ 11.1.11 < 11.1.13 · ≥ 11.1.5 < 11.1.6 · ≥ 11.1.8 < 11.1.10

Remediation

Fixed in
Palo Alto Networks PAN-OS≥ 11.1.4

References

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Frequently asked

Is CVE-2026-0263 being actively exploited?

CVE-2026-0263 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.37%.

How severe is CVE-2026-0263?

CVE-2026-0263 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.37% probability of exploitation.

Which products are affected by CVE-2026-0263?

Affected products include Palo Alto Networks PAN-OS.

How do I fix CVE-2026-0263?

Upgrade affected software to a fixed version, for example Palo Alto Networks PAN-OS 11.1.4 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-0263 against the real software inventory on every managed device, every day. 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.