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Public proof of conceptFix available

CVE-2026-0265

A public proof of concept exists; no exploitation attested.

  • Published2026-05-13
  • Fixed in12.1.7 · 12.1.4 · 11.2.10 · 11.2.7 · 11.2.4 · 11.1.13
  • WeaknessCWE-347

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An authentication bypass vulnerability in Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with network access to bypass authentication controls when Cloud Authentication Service (CAS) is enabled. The risk is higher if CAS is enabled on the management interface and lower when any other login interfaces are used. The risk of this issue is greatly reduced if you secure access to the management web interface by restricting access to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 . This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series). Cloud NGFW and Prisma Access® are not impacted by this vulnerability.

Timeline

dates in UTC
  1. 2026-05-1318:16CVE publishedNVD
  2. 2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-0265?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-0265?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Palo Alto PAN-OS
BranchAffectedFixed in
12.1≥ 12.1.5, < 12.1.712.1.7
12.1≥ 12.1.0, < 12.1.412.1.4
11.2≥ 11.2.8, < 11.2.1011.2.10
11.2≥ 11.2.5, < 11.2.711.2.7
11.2≥ 11.2.0, < 11.2.411.2.4
11.1≥ 11.1.11, < 11.1.1311.1.13
11.1≥ 11.1.8, < 11.1.1011.1.10
11.1≥ 11.1.5, < 11.1.611.1.6
11.1≥ 11.1.0, < 11.1.411.1.4
10.2≥ 10.2.14, < 10.2.1610.2.16
10.2≥ 10.2.11, < 10.2.1310.2.13
10.2≥ 10.2.8, < 10.2.1010.2.10
Siemens ruggedcom ape1808 firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Palo Alto PAN-OS to 12.1.7 · 12.1.4 · 11.2.10 · 11.2.7 · 11.2.4 · 11.1.13 · 11.1.10 · 11.1.6

Advisories and patches

Detection

read 2026-10-23 19:24 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
2 repositories, unverifiedtstephens1080/palo-alto-cve-2026-0265-checkerBishopFox/CVE-2026-0265-check
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2026-05-14
  • OpenCVESSVC decisionnone—
  • CNACVSS 4.07.2read 2026-10-23
  • NVDCVSS 3.18.1read 2026-10-23
  • CNAweakness (CWE)CWE-347read 2026-10-23
  • FIRST EPSSEPSS score1.1 %2026-10-22
  • PoC-in-GitHubproof of concept2read 2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:M/U:Red
Published
2026-05-13
Last Modified
2026-07-14
NVD status
Analyzed

Frequently asked questions

What is CVE-2026-0265?

An authentication bypass vulnerability in Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with network access to bypass authentication controls when Cloud Authentication Service (CAS) is enabled. The risk is higher if CAS is enabled on the management interface and lower when any other login interfaces are used. The risk of this issue is greatly reduced if you secure access to the management web interface by restricting access to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 . This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series). Cloud NGFW and Prisma Access® are not impacted by this vulnerability.

Is CVE-2026-0265 actively exploited?

Active exploitation of CVE-2026-0265 has not been confirmed. Its EPSS score was 1.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-0265?

CVE-2026-0265 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

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