CVE-2026-0296

MitM interception via improper certificate validation

Published Aug 13, 2026 · Updated Aug 13, 2026

Certificate validation flaws in Palo Alto Networks GlobalProtect App allow man-in-the-middle attackers to alter application communications. Palo Alto Networks has not published the affected communication endpoints or the certificate-validation operation that accepts an untrusted peer. No special configuration is required; an unauthenticated adjacent attacker can read and modify non-tunnel application traffic, while VPN tunnel traffic is unaffected.

CVSS severity7.4
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Certificate validation flaws in Palo Alto Networks GlobalProtect App allow man-in-the-middle attackers to alter application communications. Palo Alto Networks has not published the affected communication endpoints or the certificate-validation operation that accepts an untrusted peer. No special configuration is required; an unauthenticated adjacent attacker can read and modify non-tunnel application traffic, while VPN tunnel traffic is unaffected.

The record

CVE
CVE-2026-0296
Published
Aug 13, 2026
Updated
Aug 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. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=6.0.0 <6.0.15 changes=[{"at":"6.0.15","status":"unaffected"}]
  2. Affected versionversion=6.2.0
  3. Affected versionversion=6.2.0 <6.2.8-h13 changes=[{"at":"6.2.8-h13","status":"unaffected"}]
  4. Affected versionversion=6.3.0 <6.3.3-h14 changes=[{"at":"6.3.3-h14","status":"unaffected"}]
  5. Affected versionversion=6.3.0 <6.3.3-h15 changes=[{"at":"6.3.3-h15","status":"unaffected"}]

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Palo Alto Networks · GlobalProtect Appversion=6.0.0 <6.0.15 changes=[{"at":"6.0.15","status":"unaffected"}]; version=6.2.0; version=6.2.0 <6.2.8-h13 changes=[{"at":"6.2.8-h13","status":"unaffected"}]; version=6.3.0 <6.3.3-h14 changes=[{"at":"6.3.3-h14","status":"unaffected"}]; version=6.3.0 <6.3.3-h15 changes=[{"at":"6.3.3-h15","status":"unaffected"}]

Published CVSS scores

4.5Palo Alto NetworksCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
7.4Palo Alto NetworksCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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-94Man in the Middle Attack
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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