CVE-2026-0249

Traffic interception via improper certificate validation

Published May 13, 2026 · Updated May 13, 2026

Improper certificate validation in Palo Alto Networks GlobalProtect App allows attackers to intercept encrypted traffic on macOS, Android, and ChromeOS. Palo Alto Networks has not published the affected certificate-handling locus or the precise validation operation that accepts an unauthorized server. A local non-administrative user or same-subnet attacker can redirect connections and facilitate malicious software installation; macOS exposure requires SAML authentication in the embedded browser.

CVSS severity7.6
High
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in Palo Alto Networks GlobalProtect App allows attackers to intercept encrypted traffic on macOS, Android, and ChromeOS. Palo Alto Networks has not published the affected certificate-handling locus or the precise validation operation that accepts an unauthorized server. A local non-administrative user or same-subnet attacker can redirect connections and facilitate malicious software installation; macOS exposure requires SAML authentication in the embedded browser.

The record

CVE
CVE-2026-0249
Published
May 13, 2026
Updated
May 13, 2026
Vendor
Palo Alto Networks
Product
GlobalProtect App
Classifications
CWE-295, CAPEC-94, T1557
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 13, 2026CVE publishedPublication date reported by the CVE source.
  2. May 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=6.0.0 <6.0.13 changes=[{"at":"6.0.13","status":"unaffected"}]
  2. Affected versionversion=6.0.0 <6.0.14 changes=[{"at":"6.0.14","status":"unaffected"}]
  3. Affected versionversion=6.1.0 <6.1.13 changes=[{"at":"6.1.13","status":"unaffected"}]
  4. Affected versionversion=6.2.0 <6.2.8-h10 (6.2.8-948) changes=[{"at":"6.2.8-h10 (6.2.8-948)","status":"unaffected"}]
  5. Affected versionversion=6.3.0 <6.3.3-h9 (6.3.3-999) changes=[{"at":"6.3.3-h9 (6.3.3-999)","status":"unaffected"}]

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Palo Alto Networks · GlobalProtect Appversion=6.0.0 <6.0.13 changes=[{"at":"6.0.13","status":"unaffected"}]; version=6.0.0 <6.0.14 changes=[{"at":"6.0.14","status":"unaffected"}]; version=6.1.0 <6.1.13 changes=[{"at":"6.1.13","status":"unaffected"}]; version=6.2.0 <6.2.8-h10 (6.2.8-948) changes=[{"at":"6.2.8-h10 (6.2.8-948)","status":"unaffected"}]; version=6.3.0 <6.3.3-h9 (6.3.3-999) changes=[{"at":"6.3.3-h9 (6.3.3-999)","status":"unaffected"}]

Published CVSS scores

4.9Palo Alto NetworksCVSS: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
7.6Palo Alto NetworksCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-295Improper Certificate Validation
CAPEC-94Adversary in the Middle (AiTM)
T1557Adversary-in-the-Middle

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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