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NVD / CVE Program· CNA palo_alto

CVE-2026-0227: PAN-OS: Firewall Denial of Service (DoS) in GlobalProtect Gateway and Portal

Noroxi assessment

Priority: Monitor (action score 26/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.73% (FIRST EPSS); higher than 54.5% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Palo Alto Networks PAN-OS 10.1.14-h20, 10.2.10-h30, 10.2.13-h18; Palo Alto Networks Prisma Access 10.2.10-h29, 10.2.4-h43, 11.2.7-h8.

Low priority for now. Upgrade to Palo Alto Networks PAN-OS 10.1.14-h20, 10.2.10-h30, 10.2.13-h18; Palo Alto Networks Prisma Access 10.2.10-h29, 10.2.4-h43, 11.2.7-h8 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to cause a denial of service (DoS) to the firewall. Repeated attempts to trigger this issue results in the firewall entering into maintenance mode.

MediumCVSS 6.6 · v4.0—No exploit Fix available
Published
Jan 15, 2026
Updated
Jun 17, 2026
EPSS
0.7% · 54th percentile

Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.6 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · palo_alto
6.6
NVD has not scored this yet; the score shown is the CNA’s.

CVSS: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/AU:Y/R:U/V:D/RE:M/U:Amber

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-0227

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
paloaltonetworkspan-os
paloaltonetworksprisma access

Using pan-os? Add it to your stack and be the first to know about CVEs like this one. (Firewall)

Watch new CVEs for pan-os

When you'll hear from us

  • when a new CVE affecting this product is published
  • when a record in your stack enters KEV or gets exploit code

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every Monday

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • paloaltonetworks pan-os10.1.0 and later · before 10.1.14
  • paloaltonetworks pan-os10.2.0 and later · before 10.2.7
  • paloaltonetworks pan-os10.2.8 and later · before 10.2.10
  • paloaltonetworks pan-os10.2.11 and later · before 10.2.13
  • paloaltonetworks pan-os10.2.14 and later · before 10.2.16
  • paloaltonetworks pan-os11.1.0 and later · before 11.1.4
  • paloaltonetworks pan-os11.1.5 and later · before 11.1.6
  • paloaltonetworks pan-os11.1.7 and later · before 11.1.10
  • paloaltonetworks pan-os11.1.11 and later · before 11.1.13
  • paloaltonetworks pan-os11.2.0 and later · before 11.2.4
  • paloaltonetworks pan-os11.2.5 and later · before 11.2.7
  • paloaltonetworks pan-os11.2.8 and later · before 11.2.10
  • paloaltonetworks pan-os10.1.14
  • paloaltonetworks pan-os10.2.10
  • paloaltonetworks pan-os10.2.13
  • paloaltonetworks pan-os10.2.16
  • paloaltonetworks pan-os10.2.17
  • paloaltonetworks pan-os10.2.18
  • paloaltonetworks pan-os10.2.7
  • paloaltonetworks pan-os11.1.10

Versions reported by the vendor

Affected version ranges reported by the assigning authority (palo_alto). Independent of NVD's CPE analysis and usually ahead of it.

  • Palo Alto Networks Cloud NGFW

    • Allnot affected

  • Palo Alto Networks PAN-OS

    • 12.1.2 and later · before 12.1.4, 12.1.3-h3affectedfixed in 12.1.4, 12.1.3-h3
    • 11.2.0 and later · before 11.2.10-h2, 11.2.7-h8, 11.2.4-h15affectedfixed in 11.2.10-h2, 11.2.7-h8, 11.2.4-h15
    • 11.1.0 and later · before 11.1.13, 11.1.10-h9, 11.1.6-h23, 11.1.4-h27affectedfixed in 11.1.13, 11.1.10-h9, 11.1.6-h23, 11.1.4-h27
    • 10.2.0 and later · before 10.2.18-h1, 10.2.16-h6, 10.2.13-h18, 10.2.10-h30, 10.2.7-h32affectedfixed in 10.2.18-h1, 10.2.16-h6, 10.2.13-h18, 10.2.10-h30, 10.2.7-h32
    • 10.1.0 and later · before 10.1.14-h20affectedfixed in 10.1.14-h20

  • Palo Alto Networks Prisma Access

    • 11.2 and later · before 11.2.7-h8affectedfixed in 11.2.7-h8
    • 10.2 and later · before 10.2.10-h29, 10.2.4-h43affectedfixed in 10.2.10-h29, 10.2.4-h43

Same product

paloaltonetworks: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-3400PAN-OS: Arbitrary File Creation Leads to OS Command Injection Vulnerability in GlobalProtectKEV
    100Now
  • CVE-2017-15944Palo Alto Networks PAN-OS before 6.1.19, 7.0.x before 7.0.19, 7.1.x before 7.1.14, and 8.0.x before 8.0.6 allows remote attackers to executeKEV
    99Now
  • CVE-2024-0012PAN-OS: Authentication Bypass in the Management Web Interface (PAN-SA-2024-0015)KEV
    97Now

Published before and after this one in the same product

  • ← EarlierCVE-2025-4614Oct 9, 2025 · PAN-OS: Session Token Disclosure Vulnerability
    19Monitor
  • ← EarlierCVE-2025-4615Oct 9, 2025 · PAN-OS: Improper Neutralization of Input in the Management Web Interface
    22Monitor
  • Later →CVE-2026-0300May 6, 2026 · PAN-OS: Unauthenticated user initiated Buffer Overflow Vulnerability in User-ID™ Authentication PortalKEV
    80Now

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Palo Alto Networks PAN-OS10.1.14-h20Vendor (CNA)
Palo Alto Networks PAN-OS10.2.10-h30Vendor (CNA)
Palo Alto Networks PAN-OS10.2.13-h18Vendor (CNA)
Palo Alto Networks PAN-OS10.2.16-h6Vendor (CNA)
Palo Alto Networks PAN-OS10.2.18-h1Vendor (CNA)
Palo Alto Networks PAN-OS10.2.7-h32Vendor (CNA)
Palo Alto Networks PAN-OS11.1.10-h9Vendor (CNA)
Palo Alto Networks PAN-OS11.1.13Vendor (CNA)
Palo Alto Networks PAN-OS11.1.4-h27Vendor (CNA)
Palo Alto Networks PAN-OS11.1.6-h23Vendor (CNA)
Palo Alto Networks PAN-OS11.2.10-h2Vendor (CNA)
Palo Alto Networks PAN-OS11.2.4-h15Vendor (CNA)
Palo Alto Networks PAN-OS11.2.7-h8Vendor (CNA)
Palo Alto Networks PAN-OS12.1.3-h3Vendor (CNA)
Palo Alto Networks PAN-OS12.1.4Vendor (CNA)
Palo Alto Networks Prisma Access10.2.10-h29Vendor (CNA)
Palo Alto Networks Prisma Access10.2.4-h43Vendor (CNA)
Palo Alto Networks Prisma Access11.2.7-h8Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-3393384 days apartPAN-OS: Firewall Denial of Service (DoS) in DNS Security Using a Specially Crafted PacketKEV
    73This week
  • CVE-2025-0130246 days apartPAN-OS: Firewall Denial-of-Service (DoS) in the Web-Proxy Feature via a Burst of Maliciously Crafted Packets
    32Monitor
  • CVE-2026-0262118 days apartPAN-OS: Denial of Service Vulnerabilities in Network Traffic Parsing
    26Monitor
  • CVE-2026-0269146 days apartPAN-OS: Denial of Service (DoS) in Tunnel Traffic Processing
    18Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
X

Weakness class (CWE)

CWE-754 · Improper Check for Unusual or Exceptional Conditions

CVSS vector

CVSS: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/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:Y/R:U/V:D/RE:M/U:Amber

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records