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CVE-2020-2002 An authentication bypass by spoofing vulnerability exists in the authentication daemon and User-ID components of Palo…

Description

An authentication bypass by spoofing vulnerability exists in the authentication daemon and User-ID components of Palo Alto Networks PAN-OS by failing to verify the integrity of the Kerberos key distribution center (KDC) before authenticating users. This affects all forms of authentication that use a Kerberos authentication profile. A man-in-the-middle type of attacker with the ability to intercept communication between PAN-OS and KDC can login to PAN-OS as an administrator. This issue affects: PAN-OS 7.1 versions earlier than 7.1.26; PAN-OS 8.1 versions earlier than 8.1.13; PAN-OS 9.0 versions earlier than 9.0.6; All version of PAN-OS 8.0.

Affected products and versions

Product Affected versions Fixed in
PAN-OS 9.0 9.0 → < 9.0.6 9.0.6
PAN-OS 8.1 8.1 → < 8.1.13 8.1.13
PAN-OS 7.1 7.1 → < 7.1.26 7.1.26

Other CVEs of PAN-OS

The 197 CVEs of PAN-OS →
CVE-2026-0316 A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious… 1.1 Low CVE-2026-0317 A denial of service vulnerability in Palo Alto Networks PAN-OS software enables an authenticated user with a read-only… 1.2 Low CVE-2026-0318 A stack-based buffer overflow vulnerability in the log processing functionality of Palo Alto Networks PAN-OS® software… 4.6 Medium CVE-2026-0319 An improper input handling vulnerability in the GlobalProtect™ gateway of Palo Alto Networks PAN-OS software enables… 4.9 Medium
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