Security readout for executives and security teams
Plain-English summary
This flaw lets an unauthenticated attacker bypass SAML signature validation in a self-hosted Prisma Cloud Compute Console and log in as an authorized user. That can expose sensitive security data and allow unauthorized changes. Palo Alto Networks states Prisma Cloud Compute SaaS is not affected.
Executive priority
Treat this as an urgent identity-control issue for affected self-hosted consoles. It can allow account impersonation inside a security platform, creating risk to cloud workload visibility, policy integrity, and incident response trust.
Technical view
CVE-2021-3033 is a CWE-347 improper cryptographic signature verification issue in Prisma Cloud Compute Console SAML authentication. Affected releases are 19.11, 20.04, 20.09, and 20.12 before update 1. CVSS 3.1 is 9.1 with network access, low complexity, no privileges, and no user interaction.
Likely exposure
Exposure is limited to Prisma Cloud Compute Console deployments on affected self-hosted versions, especially where SAML authentication is configured and the Console is reachable over a network. Prisma Cloud Compute SaaS is explicitly not impacted.
Exploitation context
The supplied sources do not show active exploitation, and this CVE is not marked CISA KEV in the bundle. The risk remains serious because the described impact is authentication bypass as any authorized user without prior credentials.
Researcher notes
The key technical condition is failed SAML signature validation, mapped to CWE-347. The public bundle identifies affected versions and SaaS exclusion, but does not provide exploit details, proof-of-concept status, or compensating controls beyond the fixed update boundary.
Mitigation direction
- Upgrade affected self-hosted Compute Console deployments to 20.12 update 1 or later vendor guidance.
- Confirm Prisma Cloud Compute SaaS tenants are outside this CVE scope.
- Prioritize consoles using SAML authentication and reachable from untrusted networks.
- Check Palo Alto Networks advisory for exact upgrade paths and any environment-specific guidance.
Validation and detection
- Inventory all Prisma Cloud Compute Console deployments and record exact versions.
- Identify whether each deployment is SaaS or self-hosted Compute Console.
- Confirm whether SAML authentication is configured on affected self-hosted consoles.
- Review authentication logs for unusual SAML sign-ins before and after remediation.
- Verify upgraded consoles report 20.12 update 1 or a later fixed release.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-347: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-3033 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N3.95.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.1CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://security.paloaltonetworks.com/CVE-2021-3033CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Verification of Cryptographic Signature
Improper Verification of Cryptographic Signature represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.