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October 2, 2026

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CVE-2026-0263NVD

Vulnerability Summary

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.
Severity Level
UNKNOWN
Published Date
May 13, 2026
Last Modified
May 14, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.08%Probability
Root Weakness (CWE)
CWE-787: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v4.0 Base Metrics — Score 7.2 (HIGH)
Attack VectorNetwork
Attack ComplexityHigh
Attack RequirementsNone
Privileges RequiredNone
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)Low
Integrity (Subsequent System)Low
Availability (Subsequent System)None

Affected & Patched Versions

Affected Versions
  • Palo Alto Networks PAN-OS >= 12.1.0 and < 12.1.7, 12.1.4-h5
  • Palo Alto Networks PAN-OS >= 11.2.0 and < 11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h17
  • Palo Alto Networks PAN-OS >= 11.1.0 and < 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33
Patched Versions
  • Palo Alto Networks PAN-OS 12.1.7, 12.1.4-h5
  • Palo Alto Networks PAN-OS 11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h17
  • Palo Alto Networks PAN-OS 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33
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💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References