CVE-2020-2033: palo alto networks globalprotect app Authentication Bypass by Spoofing
Vulnerability summary
CVE-2020-2033 is a medium (CVSS 5.3) Authentication Bypass by Spoofing vulnerability in palo alto networks globalprotect app. EPSS estimates a 0.87% chance of exploitation in the next 30 days, higher than 58.3% of scored vulnerabilities.
Timeline
- 10-06-2020PublishedVulnerability first disclosed.
- 17-09-2024Last modifiedVulnerability information updated.
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. This issue affects: GlobalProtect app 5.0 versions earlier than GlobalProtect app 5.0.10 when the prelogon feature is enabled; GlobalProtect app 5.1 versions earlier than GlobalProtect app 5.1.4 when the prelogon feature is enabled.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST5.3MediumCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.87%
Chance of exploitation in the next 30 days
Percentile
58%
Versus all other CVEs
30-day change
0.00 pp
From 0.87% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Palo alto networks1 product
- globalprotect app≥ 5.1, < 5.1.4 | ≥ 5.0, < 5.0.10
Paloaltonetworks1 product
- globalprotect≥ 5.0.0, < 5.0.10 | ≥ 5.1.0, < 5.1.4
2 vendors · 2 products