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NVD / CVE Program· CNA palo_alto

CVE-2026-0257: PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities

HighCVSS 7.8 · v4.0KEVWeaponized Fix available

Noroxi assessment

Priority: Now (action score 90/100)

  • CISA has confirmed exploitation in the wild (May 29, 2026); it is known to be used in ransomware campaigns. Remediation deadline for US federal agencies: Jun 1, 2026.
  • A ready-made attack module is public (Nuclei); exploiting it takes no special expertise.
  • Probability of exploitation in the next 30 days: 95.6% (FIRST EPSS); higher than 99.8% 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.
  • Fixed version: Palo Alto Networks PAN-OS 10.2.10-h36, 10.2.13-h21, 10.2.16-h7; Palo Alto Networks Prisma Access 10.2.10-h36, 11.2.7-h13.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Patch today or shut off access. Upgrade to Palo Alto Networks PAN-OS 10.2.10-h36, 10.2.13-h21, 10.2.16-h7; Palo Alto Networks Prisma Access 10.2.10-h36, 11.2.7-h13 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 · CISA KEV · FIRST EPSS

Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection. Panorama and Cloud NGFW are not impacted by these issues.

Published
May 13, 2026
Updated
Oct 26, 2026
EPSS
95.6% · 99th percentile

Report tools

JSON

Action score

90

Now

Patch today or shut off access.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
30 / 30 · Listed
EPSS
29 / 30 · 95.6%

CISA SSVC decision

Exploitation
active
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · palo_alto
7.8
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:L/VI:N/VA:N/SC:H/SI:H/SA:N/E:A/AU:N/R:A/V:D/RE:M/U:Red

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

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on May 29, 2026. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Jun 1, 2026.

Known to be used in ransomware campaigns.

Get told when this record changes

  • In CISA KEV: exploitation in the wild confirmed
  • Weaponized exploit exists
  • A fix has been released

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

Follow CVE-2026-0257

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

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Is your version affected? Check it

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
siemensruggedcom ape1808 firmware
siemensruggedcom ape1808

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 is weaponized

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Your free account also gets you

  • CVE 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, at most 30 a day (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

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

    • 12.1.0 and later · before 12.1.7, 12.1.4-h6affectedfixed in 12.1.7, 12.1.4-h6
    • 11.2.0 and later · before 11.2.12, 11.2.10-h7, 11.2.7-h14, 11.2.4-h17affectedfixed in 11.2.12, 11.2.10-h7, 11.2.7-h14, 11.2.4-h17
    • 11.1.0 and later · before 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33affectedfixed in 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33
    • 10.2.0 and later · before 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34affectedfixed in 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34

  • Palo Alto Networks Prisma Access

    • 10.2.0 and later · before 10.2.10-h36affectedfixed in 10.2.10-h36
    • 11.2.0 and later · before 11.2.7-h13affectedfixed in 11.2.7-h13
Affected versions · NVD (20)

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

  • paloaltonetworks pan-osbefore 10.2.7
  • paloaltonetworks pan-os10.2.10
  • paloaltonetworks pan-os10.2.11
  • paloaltonetworks pan-os10.2.12
  • paloaltonetworks pan-os10.2.13
  • paloaltonetworks pan-os10.2.14
  • paloaltonetworks pan-os10.2.15
  • paloaltonetworks pan-os10.2.16
  • paloaltonetworks pan-os10.2.17
  • paloaltonetworks pan-os10.2.18
  • paloaltonetworks pan-os10.2.7
  • paloaltonetworks pan-os10.2.8
  • paloaltonetworks pan-os10.2.9
  • paloaltonetworks pan-os11.1.0
  • paloaltonetworks pan-os11.1.1
  • paloaltonetworks pan-os11.1.10
  • paloaltonetworks pan-os11.1.11
  • paloaltonetworks pan-os11.1.12
  • paloaltonetworks pan-os11.1.13
  • paloaltonetworks pan-os11.1.14

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…KEV
    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-2026-0265May 13, 2026 · PAN-OS: Authentication Bypass with Cloud Authentication Service (CAS) enabled
    60This week
  • ← EarlierCVE-2026-0256May 13, 2026 · PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface
    17Monitor
  • Later →CVE-2026-0258May 13, 2026 · PAN-OS: Server-Side Request Forgery (SSRF) in IKEv2 Certificate URL Fetching
    19Monitor

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-OS10.2.10-h36Vendor (CNA)
Palo Alto Networks PAN-OS10.2.13-h21Vendor (CNA)
Palo Alto Networks PAN-OS10.2.16-h7Vendor (CNA)
Palo Alto Networks PAN-OS10.2.18-h6Vendor (CNA)
Palo Alto Networks PAN-OS10.2.7-h34Vendor (CNA)
Palo Alto Networks PAN-OS11.1.10-h25Vendor (CNA)
Palo Alto Networks PAN-OS11.1.13-h5Vendor (CNA)
Palo Alto Networks PAN-OS11.1.15Vendor (CNA)
Palo Alto Networks PAN-OS11.1.4-h33Vendor (CNA)
Palo Alto Networks PAN-OS11.1.6-h32Vendor (CNA)
Palo Alto Networks PAN-OS11.1.7-h6Vendor (CNA)
Palo Alto Networks PAN-OS11.2.10-h7Vendor (CNA)
Palo Alto Networks PAN-OS11.2.12Vendor (CNA)
Palo Alto Networks PAN-OS11.2.4-h17Vendor (CNA)
Palo Alto Networks PAN-OS11.2.7-h14Vendor (CNA)
Palo Alto Networks PAN-OS12.1.4-h6Vendor (CNA)
Palo Alto Networks PAN-OS12.1.7Vendor (CNA)
Palo Alto Networks Prisma Access10.2.10-h36Vendor (CNA)
Palo Alto Networks Prisma Access11.2.7-h13Vendor (CNA)

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Nuclei detection template ×1
  • Proof-of-concept repository on GitHub ×7

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHub7 repositories2026-05-29 → 2026-06-15
Nuclei detection templateNuclei template CVE-2026-0257 —

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.

  1. Published
  2. First PoC+15 d
  3. CISA KEV+15 d
  4. TodayNov 14, 2026+184 d
EPSS, last 120 days+1% in 7 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Credits

All researchers

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

Chain candidates

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

  • CVE-2026-02610 days apartPAN-OS: Authenticated Admin Command Injection Vulnerability
    24Monitor
  • CVE-2026-027328 days apartPAN-OS: Authenticated Admin Command Injection Vulnerability via CLI or Web UI
    24Monitor
  • CVE-2026-02590 days apartWildFire WF-500 and WF-500-B: Arbitrary File Read and Delete Vulnerability in WildFire Appliance (WF-500, WF-500-B)
    20Monitor
  • CVE-2026-028557 days apartPAN-OS: Server-Side Request Forgery Vulnerability in Management Web Interface
    18Monitor

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Not on record for this CVE: patch commit or PR link · public bounty program.

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-565 · Reliance on Cookies without Validation and Integrity Checking

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N/E:A/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:A/V:D/RE:M/U:Red

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.

References

Show all references (2 more)

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

All records