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PAN-OS: Sensitive Information Disclosure Vulnerability

CVE-2026-0331EUVD-2026-123778

6.6MediumCNA
Exploited
No known exploitation
Fix
Fixed in PAN-OS 12.2.4-h2, 12.1.7-h12, 11.2.13-h5, 11.1.13-h17, 10.2.16-h13 · Prisma Access 12.1.10-h4, 11.2.7-h24, 10.2.10-h43
Who is exposed
Not reported

Do first: Upgrade to a fixed version: PAN-OS 12.2.4-h2, 12.1.7-h12, 11.2.13-h5, 11.1.13-h17, 10.2.16-h13 · Prisma Access 12.1.10-h4, 11.2.7-h24, 10.2.10-h43.

Published
Last modified
Reference
Last checked
38/100 · provisional
None on Exploit-DB, Metasploit or GitHub

Summary

An unauthenticated attacker on the network can reach this flaw by sending traffic to or through a dataplane interface of Palo Alto Networks PAN-OS, Cloud NGFW, or Prisma Access. Successful exploitation lets the attacker obtain sensitive firewall and session information, and Panorama is not affected.

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

Read the original description

An information disclosure vulnerability in Palo Alto Networks PAN-OS® software enables an unauthenticated remote attacker with network access to obtain sensitive firewall and session information by sending traffic to or through a dataplane interface.

Panorama is not affected by this vulnerability.

cve.now Index

38Pcve.now Index 38 of 100 · methodology v3 · provisional
  • Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
  • Exposure17/25No login or user action needed per the CVSS vector, reachable over the network without a login · Unknown: No advisory context yet
  • Reach14/20Affects Palo Alto PAN-OS (an enterprise product or network appliance)
  • Severity6.6/10CVSS 6.6
  • No patch0/5No signal

What would change the score

  • Would score about 83 if added to CISA KEV
  • Would score about 78 if CISA's SSVC rates exploitation active
  • Would score about 43 if advisories confirm default setups are exposed

What to do

  • Upgrade to a fixed version: PAN-OS 12.2.4-h2, 12.1.7-h12, 11.2.13-h5, 11.1.13-h17, 10.2.16-h13 · Prisma Access 12.1.10-h4, 11.2.7-h24, 10.2.10-h43.

Check your systems with an agent

Paste this into a coding or ops agent. It checks your systems read-only and reports a table per asset.

Check whether my systems are affected by CVE-2026-0331 (PAN-OS: Sensitive Information Disclosure Vulnerability), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-0331 (entry last updated 2026-11-11):
Affected:
- Palo Alto Networks Cloud NGFW: all versions
- Palo Alto Networks PAN-OS: from 12.2.0, fixed in 12.2.4-h2; from 12.1.0, fixed in 12.1.7-h12; from 11.2.0, fixed in 11.2.13-h5; from 11.1.0, fixed in 11.1.13-h17; from 10.2.0, fixed in 10.2.16-h13
- Palo Alto Networks Prisma Access: from 12.1.0, fixed in 12.1.10-h4; from 11.2.0, fixed in 11.2.7-h24; from 10.2.0, fixed in 10.2.10-h43
Fixed versions: 12.2.4-h2, 12.1.7-h12, 11.2.13-h5, 11.1.13-h17, 10.2.16-h13, 12.1.10-h4, 11.2.7-h24, 10.2.10-h43.
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
CISA KEV: CVE-2026-0331 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-0331 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://security.paloaltonetworks.com/CVE-2026-0331
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/CVE-2026-0331
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-0331"}.

Timeline

  1. CVE published
  2. First seen by cve.now

Affected versions

  • Palo Alto Networks Cloud NGFW

    All versions

  • Palo Alto Networks PAN-OS

    From 12.2.0 · fixed in 12.2.4-h2; From 12.1.0 · fixed in 12.1.7-h12; From 11.2.0 · fixed in 11.2.13-h5; From 11.1.0 · fixed in 11.1.13-h17; From 10.2.0 · fixed in 10.2.16-h13

  • Palo Alto Networks Prisma Access

    From 12.1.0 · fixed in 12.1.10-h4; From 11.2.0 · fixed in 11.2.7-h24; From 10.2.0 · fixed in 10.2.10-h43

Evidence 3

CVE record · 2

Establishes: The identifier and description.

  1. Record
  2. Record

Other links · 1

  1. Advisory

Corrections

None so far.

Something wrong on this page? Report an error. Every fix is listed here.

Questions about CVE-2026-0331

Is CVE-2026-0331 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data

Which versions are affected by CVE-2026-0331?

Cloud NGFW: all versions. PAN-OS: from 12.2.0 before 12.2.4-h2; from 12.1.0 before 12.1.7-h12; from 11.2.0 before 11.2.13-h5; from 11.1.0 before 11.1.13-h17; from 10.2.0 before 10.2.16-h13. Prisma Access: from 12.1.0 before 12.1.10-h4; from 11.2.0 before 11.2.7-h24; from 10.2.0 before 10.2.10-h43.Source: cve.now feed data

How do I fix CVE-2026-0331?

Upgrade to a fixed version: PAN-OS 12.2.4-h2, 12.1.7-h12, 11.2.13-h5, 11.1.13-h17, 10.2.16-h13 · Prisma Access 12.1.10-h4, 11.2.7-h24, 10.2.10-h43.Source: cve.now feed data