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CVE-2026-0249· NVD / CVE Program· CNA palo_alto

GlobalProtect App: Certificate Validation Bypass Vulnerabilities

Multiple improper certificate validation vulnerabilities in the Palo Alto Networks GlobalProtect™ app enables an attacker to intercept encrypted communications and potentially compromise the endpoint. This can enable a local non-administrative operating system user or an attacker on the same subnet to redirect traffic to an unauthorized server and facilitate the installation of malicious software. The GlobalProtect app on Linux, Windows, iOS and GlobalProtect UWP app are not affected.

MediumCVSS 4.9 · v4.0—No exploit Fix available
Published
May 13, 2026
Updated
Jul 14, 2026
EPSS
0.1% · 1th percentile
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Report tools

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Action score

19

Monitor

Low priority for now.

CVSS
19 / 40 · 4.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · palo_alto
4.9
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/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.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Affected systems

VendorProduct
paloaltonetworksglobalprotect

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Affected versions

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

  • paloaltonetworks globalprotect6.0.0 and later · before 6.0.13
  • paloaltonetworks globalprotect6.0.0 and later · before 6.0.14
  • paloaltonetworks globalprotect6.1.0 and later · before 6.1.14
  • paloaltonetworks globalprotect6.2.0 and later · before 6.2.8
  • paloaltonetworks globalprotect6.3.0 and later · before 6.3.3
  • paloaltonetworks globalprotect6.2.8
  • paloaltonetworks globalprotect6.3.3

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 GlobalProtect App

    • Allnot affected
    • 6.3.0 and later · before 6.3.3-h9 (6.3.3-999)affectedfixed in 6.3.3-h9 (6.3.3-999)
    • 6.2.0 and later · before 6.2.8-h10 (6.2.8-948)affectedfixed in 6.2.8-h10 (6.2.8-948)
    • 6.1.0 and later · before 6.1.13affectedfixed in 6.1.13
    • 6.0.0 and later · before 6.0.14affectedfixed in 6.0.14
    • 6.0.0 and later · before 6.0.13affectedfixed in 6.0.13

Same product

paloaltonetworks: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-4232GlobalProtect: Authenticated Code Injection Through Wildcard on macOS
    34Monitor
  • CVE-2021-3057GlobalProtect App: Buffer Overflow Vulnerability When Connecting to Portal or Gateway
    32Monitor
  • CVE-2023-0009GlobalProtect App: Local Privilege Escalation (PE) Vulnerability
    31Monitor
  • CVE-2022-0017GlobalProtect App: Improper Link Resolution Vulnerability Leads to Local Privilege Escalation
    31Monitor
  • CVE-2022-0016GlobalProtect App: Privilege Escalation Vulnerability When Using Connect Before Logon
    31Monitor
  • CVE-2020-1989Global Protect Agent: Incorrect privilege assignment allows local privilege escalation
    31Monitor

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 GlobalProtect App6.0.13Vendor (CNA)
Palo Alto Networks GlobalProtect App6.0.14Vendor (CNA)
Palo Alto Networks GlobalProtect App6.1.13Vendor (CNA)
Palo Alto Networks GlobalProtect App6.2.8-h10 (6.2.8-948)Vendor (CNA)
Palo Alto Networks GlobalProtect App6.3.3-h9 (6.3.3-999)Vendor (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.

EPSS, last 120 days

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

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-2024-5921532 days apartGlobalProtect App: Insufficient Certificate Validation Leads to Privilege Escalation
    28Monitor
  • CVE-2026-029691 days apartGlobalProtect App: Improper Certificate Validation Bypass Vulnerability
    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

  • Someone on the same network segment 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
Adjacent
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
X

Weakness class (CWE)

CWE-295 · Improper Certificate Validation

CVSS vector

CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/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:N/R:U/V:D/RE:M/U:Amber

nvd-secondary

Root cause

A certificate validation error is silently swallowed instead of terminating the connection. Often, code added for a test environment makes its way into production.

The bug in code

The whole CWE-295 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

kotlin
override fun checkServerTrusted(chain: Array<X509Certificate>, type: String) {  // Left empty for the test environment}

Fixed

kotlin
val client = OkHttpClient.Builder()  .certificatePinner(    CertificatePinner.Builder()      .add("api.sirius.example", "sha256/…")      .build()  ).build()

Attack context

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

ATT&CK techniques

—

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