vulnerability
Palo Alto Networks GlobalProtect App: CVE-2020-2033: Missing certificate validation vulnerability can disclose pre-logon authentication cookie
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 3 | (AV:A/AC:M/Au:N/C:P/I:N/A:N) | Jun 10, 2020 | May 21, 2025 | Mar 25, 2026 |
Severity
3
CVSS
(AV:A/AC:M/Au:N/C:P/I:N/A:N)
Published
Jun 10, 2020
Added
May 21, 2025
Modified
Mar 25, 2026
Description
When the pre-logon feature is enabled, a missing certification validation in Palo Alto Networks GlobalProtect app can disclose the pre-logon authentication cookie to a man-in-the-middle attacker on the same local area network segment with the ability to manipulate ARP or to conduct ARP spoofing attacks. This allows the attacker to access the GlobalProtect Server as allowed by configured Security rules for the 'pre-login' user. This access may be limited compared to the network access of regular users.
Solution
palo-alto-networks-globalprotect-app-upgrade-latest
Rapid7 Labs
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