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CVE-2026-0265

PAN-OS: Authentication Bypass with Cloud Authentication Service (CAS) enabled

No known exploitation. EPSS puts it in the 65th percentile. Fixed versions are out.

CVSS 3.18.1HighEPSS percentile65th1.1% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix4 products6 fixed builds listed below
Check it yourself

OpenVAS · 1 check

e.g. OID 1.3.6.1.4.1.25623.1.0.156970

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Published Updated Sources: CVE.org, NVD, BDU, CSAF

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Palo Alto Networks Cloud NGFWFixed buildsAllStated by: CVE record
  • Palo Alto Networks PAN-OSAffected: ≥ 12.1.0, < 12.1.7Upgrade to: 12.1.7Affected: ≥ 12.1.0, < 12.1.4-h5Upgrade to: 12.1.4-h5Affected: ≥ 11.2.0, < 11.2.12Upgrade to: 11.2.12Affected: ≥ 11.2.0, < 11.2.10-h6Upgrade to: 11.2.10-h6 + 13 more branchesStated by: CVE record
  • Palo Alto Networks Prisma AccessFixed buildsAllStated by: CVE record
  • Paloaltonetworks Pan-osAffected: < 10.2.7Upgrade to: 10.2.7Stated by: NVD

Versions as the sources state them. Full version matrix after sign-in

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

Coverage timeline

2 publishers

  1. JWT signature bypass (CVE-2026-0265) in PAN-OS patched in 10.2.18+ and 11.1.15+.

    ·Bishop Fox

  2. Advisory coverage

    ·Rapid7 Blog

Sourced from public security reporting — each date is when it was published, not when it happened. 1 further article named this CVE in wider roundups without reporting it as a distinct event.

What it is

From the CVE record

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.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS65th
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

1.1% chance of exploitation activity in the next 30 days, which ranks it in the 65th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

13 events over 166 days, from the signal feeds we watch.

  1. Patch availableworkaround available, record updated
  2. Patch availableworkaround available, record updated
  3. OpenVAS check added
  4. Patch availableworkaround available, record updated
  5. Publishedweakness classified, att&ck mapped

Affected products

And 1 more affected product. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Scored 8.1 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity HighTotal loss of integrity — attacker can modify any data in the component
  • Availability HighTotal denial of service — the component is completely unavailable

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

And 34 more references. See all after sign-in

In the news

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We'll flag the next CVE, public exploit or patch for Cloud NGFW, not every advisory.