Is CVE-2021-3033 actively exploited?

No active exploitation of CVE-2021-3033 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-3033 be exploited remotely?

Yes. CVE-2021-3033 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-3033?

CVE-2021-3033 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-3033

CWE-347Published: February 10, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2021-3033 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.