CVE-2020-2050
No exploitation reported by the sources we read.
- Published2020-11-12
- Fixed in10.0.1 · 9.1.5 · 9.0.11 · 8.1.17
- WeaknessCWE-285 · CWE-287
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
An authentication bypass vulnerability exists in the GlobalProtect SSL VPN component of Palo Alto Networks PAN-OS software that allows an attacker to bypass all client certificate checks with an invalid certificate. A remote attacker can successfully authenticate as any user and gain access to restricted VPN network resources when the gateway or portal is configured to rely entirely on certificate-based authentication. Impacted features that use SSL VPN with client certificate verification are: GlobalProtect Gateway, GlobalProtect Portal, GlobalProtect Clientless VPN In configurations where client certificate verification is used in conjunction with other authentication methods, the protections added by the certificate check are ignored as a result of this issue. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.17; PAN-OS 9.0 versions earlier than PAN-OS 9.0.11; PAN-OS 9.1 versions earlier than PAN-OS 9.1.5; PAN-OS 10.0 versions earlier than PAN-OS 10.0.1.
Timeline
dates in UTC- 2020-11-1200:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-2050?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-2050?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 10.0 | ≥ 10.0.0, < 10.0.1 | 10.0.1 | NVD |
| 9.1 | ≥ 9.1.0, < 9.1.5 | 9.1.5 | NVD |
| 9.0 | ≥ 9.0.0, < 9.0.11 | 9.0.11 | NVD |
| 8.1 | ≥ 8.1.0, < 8.1.17 | 8.1.17 | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Palo Alto PAN-OS to 10.0.1 · 9.1.5 · 9.0.11 · 8.1.17
Advisories and patches
- security.paloaltonetworks.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- Published
- 2020-11-12
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-2050?
Is CVE-2020-2050 actively exploited?
What is the CVSS score for CVE-2020-2050?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.