CVE-2026-0287Network attack vector

Maintenance mode via crafted dataplane traffic

Published Jul 9, 2026 · Updated Jul 9, 2026

Denial of service in PAN-OS network traffic processing allows attackers to force firewalls into maintenance mode via crafted dataplane traffic. Palo Alto Networks has not disclosed the specific dataplane parser or exceptional condition that mishandles the crafted network input. PAN-OS and Cloud NGFW need no special configuration and repeated attempts are required; Prisma Access requires authentication and restricts external dataplane access.

CVSS severity8.7
High
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in PAN-OS network traffic processing allows attackers to force firewalls into maintenance mode via crafted dataplane traffic. Palo Alto Networks has not disclosed the specific dataplane parser or exceptional condition that mishandles the crafted network input. PAN-OS and Cloud NGFW need no special configuration and repeated attempts are required; Prisma Access requires authentication and restricts external dataplane access.

The record

CVE
CVE-2026-0287
Published
Jul 9, 2026
Updated
Jul 9, 2026
Vendor
Palo Alto Networks
Product
PAN-OS
Classifications
CWE-754, CAPEC-153, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.2.0 <10.2.7-h36 changes=[{"at":"10.2.7-h36","status":"unaffected"},{"at":"10.2.10-h39","status":"unaffected"},{"at":"10.2.13-h23","status":"unaffected"},{"at":"10.2.16-h9","status":"unaffected"},{"at":"10.2.18-h8","status":"unaffected"}]
  2. Affected versionversion=11.1.0 <11.1.4-h35 changes=[{"at":"11.1.4-h35","status":"unaffected"},{"at":"11.1.6-h35","status":"unaffected"},{"at":"11.1.7-h8","status":"unaffected"},{"at":"11.1.10-h30","status":"unaffected"},{"at":"11.1.13-h9","status":"unaffected"},{"at":"11.1.16","status":"unaffected"}]
  3. Affected versionversion=11.2.0 <11.2.4-h20 changes=[{"at":"11.2.4-h20","status":"unaffected"},{"at":"11.2.7-h18","status":"unaffected"},{"at":"11.2.10-h12","status":"unaffected"},{"at":"11.2.13","status":"unaffected"}]
  4. Affected versionversion=12.1.0 <12.1.4-h8 changes=[{"at":"12.1.4-h8","status":"unaffected"},{"at":"12.1.7-h2","status":"unaffected"},{"at":"12.1.8","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Palo Alto Networks · PAN-OSversion=10.2.0 <10.2.7-h36 changes=[{"at":"10.2.7-h36","status":"unaffected"},{"at":"10.2.10-h39","status":"unaffected"},{"at":"10.2.13-h23","status":"unaffected"},{"at":"10.2.16-h9","status":"unaffected"},{"at":"10.2.18-h8","status":"unaffected"}]; version=11.1.0 <11.1.4-h35 changes=[{"at":"11.1.4-h35","status":"unaffected"},{"at":"11.1.6-h35","status":"unaffected"},{"at":"11.1.7-h8","status":"unaffected"},{"at":"11.1.10-h30","status":"unaffected"},{"at":"11.1.13-h9","status":"unaffected"},{"at":"11.1.16","status":"unaffected"}]; version=11.2.0 <11.2.4-h20 changes=[{"at":"11.2.4-h20","status":"unaffected"},{"at":"11.2.7-h18","status":"unaffected"},{"at":"11.2.10-h12","status":"unaffected"},{"at":"11.2.13","status":"unaffected"}]; version=12.1.0 <12.1.4-h8 changes=[{"at":"12.1.4-h8","status":"unaffected"},{"at":"12.1.7-h2","status":"unaffected"},{"at":"12.1.8","status":"unaffected"}]
Palo Alto Networks · Cloud NGFWversion=All
Palo Alto Networks · Prisma Accessversion=10.2.0 <10.2.10-h39 changes=[{"at":"10.2.10-h39","status":"unaffected"}]; version=11.2.0 <11.2.7-h18 changes=[{"at":"11.2.7-h18","status":"unaffected"}]

Published CVSS scores

6.6Palo Alto NetworksCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
4.6Palo Alto NetworksCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
8.7Palo Alto NetworksCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.9Palo Alto NetworksCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions
CAPEC-153Input Data Manipulation
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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