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CVE-2026-0257

PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities

CVSS 4.0 High 7.8Known exploited (CISA KEV)

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

Description

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.

Official description from the CVE record, published by palo_alto. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org

Key data

CVSS 4.0 High 7.8

Score published by palo_alto in the CVE record.

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

  • Attack vector: Network

    The vulnerable component can be reached over a network, possibly from the Internet.

  • Attack complexity: Low

    No measurable action is needed to get around the system's built-in security controls. The attack is repeatable.

  • Attack requirements: None

    The attack works without any special deployment or execution conditions.

  • Privileges required: None

    No account or privileges are needed.

  • User interaction: None

    No action from any user is needed.

  • Vulnerable system: confidentiality: Low

    Limited effect on the secrecy of data.

  • Vulnerable system: integrity: None

    No effect on the trustworthiness of data.

  • Vulnerable system: availability: None

    No effect on availability.

  • Subsequent systems: confidentiality: High

    Serious or total effect on other systems' data secrecy.

  • Subsequent systems: integrity: High

    Serious or total effect on other systems' data trustworthiness.

  • Subsequent systems: availability: None

    No effect on other systems' availability.

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at first.org/cvss.

EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.
Score
0.95642 (95.6% probability)
Percentile
99.9%
Scores of
Nov 10, 2026
Model
v2026.06.15

CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.
Name in the catalog
Palo Alto Networks PAN-OS Authentication Bypass Vulnerability
Added to the catalog
May 29, 2026
Federal due date
Jun 1, 2026
Ransomware campaigns
Known use

CISA assessment as of May 28, 2026

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.
Exploitation
Recorded by CISA as active
Automatable
no
Technical impact
total

Weakness (CWE)

CWE catalog version 5.0.
CWE names: Copyright © 2006-2026, The MITRE Corporation. See /security/cve/legal for the CWE license.
  • CWE-565Reliance on Cookies without Validation and Integrity Checking

Affected products

Products listed in the CVE record, as the CNA published them.

  • Palo Alto Networks PAN-OS

    • affected: 12.1.0 up to before 12.1.7, 12.1.4-h6
    • affected: 11.2.0 up to before 11.2.12, 11.2.10-h7, 11.2.7-h14, 11.2.4-h17
    • affected: 11.1.0 up to before 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33
    • affected: 10.2.0 up to before 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

    • affected: 10.2.0 up to before 10.2.10-h36
    • affected: 11.2.0 up to before 11.2.7-h13

Listed as not affected

  • Palo Alto Networks Cloud NGFW

References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

Timeline

  1. ID reserved
  2. Record published
  3. Added to CISA KEV
  4. Record last updated

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About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.
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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:51 UTC. Sources and licenses