Vulnerability in Palo Alto Networks Pan-os
CVE-2020-2021
When Security Assertion Markup Language (SAML) authentication is enabled and the 'Validate Identity Provider Certificate' option is disabled (unchecked), improper verification of signatures in PAN-OS SAML authentication enables an unauthen…
EPSS: 0.190 (95.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Palo Alto Networks Pan-os — versions 7.1.*, 8.0.*, 8.1
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Known ransomware campaign use: yes.
Public proof-of-concept exploits
References
- security.paloaltonetworks.com/CVE-2020-2021 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-2021?
- CVE-2020-2021 is a critical-severity vulnerability in Palo Alto Networks Pan-os, classified under Improper Verification of Cryptographic Signature. CVSS score: 10.0/10. Published 2020-06-29.
- How severe is CVE-2020-2021?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2020-2021 known to be exploited?
- Yes. CVE-2020-2021 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating it is being actively exploited. 8 public proof-of-concept repositories are indexed.