Security readout for executives and security teams
Plain-English summary
CVE-2021-3046 lets a SAML-authenticated user impersonate another user through Palo Alto Networks GlobalProtect Portal or Gateway when SAML authentication is enabled. It affects specific older PAN-OS 8.1, 9.0, 9.1, and 10.0 releases. Business impact is unauthorized VPN identity misuse, not service disruption.
Executive priority
Treat as a prioritized maintenance issue for SAML-enabled GlobalProtect environments. It is not listed as actively exploited in the supplied evidence, but it can undermine VPN identity trust and should be remediated during the next controlled patch window.
Technical view
PAN-OS has a CWE-287 improper authentication flaw in SAML handling for GlobalProtect Portal and Gateway. A network-accessible attacker with valid SAML authentication may impersonate other users. CVSS 3.1 is 6.8, with high confidentiality and integrity impact, high attack complexity, low privileges required, and no user interaction.
Likely exposure
Exposure is limited to Palo Alto Networks PAN-OS GlobalProtect Portal or Gateway deployments configured for SAML authentication and running affected versions before 8.1.19, 9.0.14, 9.1.9, or 10.0.5. The source states PAN-OS 10.1 versions are not impacted.
Exploitation context
The source bundle does not report active exploitation, and CISA KEV status is false. The attacker must already be SAML authenticated, and the CVSS vector rates attack complexity as high. The main concern is identity impersonation within VPN access paths.
Researcher notes
Focus validation on SAML-enabled GlobalProtect Portal and Gateway configurations. The vendor description identifies impersonation by a SAML-authenticated attacker but does not provide exploit details in the bundle. Avoid assuming impact on non-SAML GlobalProtect or PAN-OS 10.1 deployments.
Mitigation direction
- Upgrade PAN-OS 8.1 to 8.1.19 or later.
- Upgrade PAN-OS 9.0 to 9.0.14 or later.
- Upgrade PAN-OS 9.1 to 9.1.9 or later.
- Upgrade PAN-OS 10.0 to 10.0.5 or later.
- Review Palo Alto Networks guidance for supported mitigations if upgrading is delayed.
Validation and detection
- Inventory PAN-OS versions on GlobalProtect Portal and Gateway systems.
- Confirm whether GlobalProtect Portal or Gateway uses SAML authentication.
- Verify affected systems meet or exceed the fixed PAN-OS versions.
- Confirm PAN-OS 10.1 systems are not treated as affected based on the source.
- Review authentication logs for unexpected identity use patterns.
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-287: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. 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 lookupCVE-2021-3046 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
- Medium
- CVSS
- 6.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:L/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:H/PR:L/UI:N/S:U/C:H/I:H/A:N1.65.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.8MediumVector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://security.paloaltonetworks.com/CVE-2021-3046CVE 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 Authentication
Improper Authentication represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.