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CVE-2026-0263

📛 CVE Title

PAN-OS: Remote Code Execution (RCE) in IKEv2 Processing

⬇ Download JSON ⚠ View as Threat

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.

Overview

State
PUBLISHED
Assigner (CNA)
palo_alto
CVSS severity
HIGH
CVSS score
CVSS 7.2 / 10 7.2 7.2 / 10
CVSS vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/E:U/AU:Y/R:U/V:C/RE:H/U:Red
Effective score
7.2 / 10 HIGH source: CNA overview
CWE(s)
CWE-787
Reserved
2025-11-03
Published
2026-05-13 17:47 UTC
Last updated
2026-05-14 03:56 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/0xxx/CVE-2026-0263.json
Linked Threat
CVE-2026-0263 — PAN-OS: Remote Code Execution (RCE) in IKEv2 Processing

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published
2026-05-13 18:16:14 UTC
NVD last modified
2026-05-13 18:17:47 UTC
EPSS score
0.0008 (probability of exploitation in next 30 days)
EPSS percentile
23.13% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

NVD / KEV / EPSS data refreshed 2026-05-25 04:49 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID
EUVD-2026-30064
Assigner
palo_alto
Published
May 13, 2026, 5:47:05 PM
Updated
May 14, 2026, 3:56:32 AM
EUVD base score (CVSS 4.0)
7.2 / 10
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/E:U/AU:Y/R:U/V:C/RE:H/U:Red
EUVD-reported EPSS
0.0800
Vendors
Palo Alto Networks
Products
PAN-OS (11.2.0 <11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h17)
Cloud NGFW
PAN-OS (12.1.0 <12.1.7, 12.1.4-h5)
Prisma Access
PAN-OS
PAN-OS (11.1.0 <11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33)

ENISA 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.

EUVD references (1)

Affected products (3)
VendorProductVersionsPlatforms
Palo Alto Networks Cloud NGFW All (unaffected) —
Palo Alto Networks PAN-OS 12.1.0 (affected), 11.2.0 (affected), 11.1.0 (affected), 10.2.0 (unaffected) —
Palo Alto Networks Prisma Access All (unaffected) —

Vendor references (1)

References embedded in the original CVE record by the assigning CNA.

Web references (7)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

NVD-tagged references (1)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

Indicators (1)

IOCs linked to the auto-promoted Threat row.

TypeValueVirusTotalAttached
cve CVE-2026-0263 no local data 2026-05-14 09:33 UTC

Flagged vendors

    Remediations (8)

    Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

    • Microsoft Patch Tuesday May 2026 - 120 Vulnerabilities Fixed, Including ...
      web:cybersecuritynews.com

      Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.

      2026-05-17 01:54 UTC
    • Security Update Guide - Loading - Microsoft
      web:msrc.microsoft.com

      The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.

      2026-05-17 01:54 UTC
    • Security Update Guide - Microsoft
      web:portal.msrc.microsoft.com

      The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

      2026-05-17 01:54 UTC
    • CVE-2026-0263 PAN-OS: Remote Code Execution (RCE) in IKEv2 Processing
      web:security.paloaltonetworks.com

      Palo Alto Networks Security Advisory: CVE-2026-0263 PAN-OS: Remote Code Execution (RCE) in IKEv2 Processing 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 ...

      2026-05-17 01:54 UTC
    • Pan-OS IKEv2 Buffer Overflow Enables RCE: CVE-2026-0263 May 2026
      web:stack.watch

      The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results. CVE-2026-0263 has been classified to as a Memory Corruption vulnerability or weakness.

      2026-05-17 01:54 UTC
    • Microsoft April 2026 Patch Tuesday fixes 167 flaws, 2 zero-days
      web:www.bleepingcomputer.com

      Today is Microsoft's April 2026 Patch Tuesday with security updates for 167 flaws, including 2 zero-day vulnerabilities.

      2026-05-17 01:54 UTC
    • Microsoft May 2026 Patch Tuesday Fixes 130+ Vulnerabilities ... - LinkedIn
      web:www.linkedin.com

      Microsoft has released its May 2026 Patch Tuesday security updates, addressing more than 130 vulnerabilities across its software ecosystem, including Windows, Microsoft Office, SharePoint Server ...

      2026-05-17 01:54 UTC
    • Patch Tuesday May 2026: Security Updates & CVE Analysis
      web:zecurit.com

      Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

      2026-05-17 01:54 UTC

    AI Forensic Analysis

    Only Available for Registered Users. Sign in to view.

    Raw JSON

    The full cvelistV5 record. Download as CVE-2026-0263.json.

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                  "status": "unaffected"
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                  "status": "unaffected"
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                  "status": "unaffected"
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                {
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                  "status": "unaffected"
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              "status": "affected",
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              "base64": false,
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