CVE-2021-3033

Name: CVE-2021-3033
Creator: NVD / NIST
Published: 2021-02-10T18:15:13.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.21%

Last modified Jun 17, 2026

CVE-2021-3033 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An improper verification of cryptographic signature vulnerability exists in the Palo Alto Networks Prisma Cloud Compute console. This vulnerability enables an attacker to bypass signature validation during SAML authentication by logging in to the Prisma Cloud Compute console as any authorized user. EPSS estimates a 1.21% chance of exploitation in the next 30 days.

Description

An improper verification of cryptographic signature vulnerability exists in the Palo Alto Networks Prisma Cloud Compute console. This vulnerability enables an attacker to bypass signature validation during SAML authentication by logging in to the Prisma Cloud Compute console as any authorized user. This issue impacts: All versions of Prisma Cloud Compute 19.11, Prisma Cloud Compute 20.04, and Prisma Cloud Compute 20.09; Prisma Cloud Compute 20.12 before update 1. Prisma Cloud Compute SaaS version is not impacted by this vulnerability.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.21%

64.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Paloaltonetworks	Prisma Cloud	19.11
Paloaltonetworks	Prisma Cloud	20.04
Paloaltonetworks	Prisma Cloud	20.09
Paloaltonetworks	Prisma Cloud	20.12

References

https://security.paloaltonetworks.com/CVE-2021-3033Third Party Advisory
https://security.paloaltonetworks.com/CVE-2021-3033Third Party Advisory

Timeline

Published: Feb 10, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3033?

How severe is CVE-2021-3033?

CVE-2021-3033 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.21% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3033?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3033?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST