Security readout for executives and security teams
Plain-English summary
A flaw in Palo Alto Networks PAN-OS can let a logged-in administrator with XML API permissions run operating-system commands and gain higher privileges. This is serious because firewall administrators already operate in a sensitive control plane, and successful abuse can affect confidentiality, integrity, and availability.
Executive priority
Treat as high priority for firewall environments running affected PAN-OS versions. This is not an unauthenticated internet-wide bug from the supplied evidence, but compromise of firewall administrative control can materially affect business operations and network security.
Technical view
CVE-2021-3058 is a CWE-78 OS command injection issue in the PAN-OS web interface XML API. It affects specified PAN-OS 8.1, 9.0, 9.1, 10.0, and 10.1 versions before the fixed releases. CVSS 3.1 is 8.8 with network attack vector, low complexity, low privileges, no user interaction, and high CIA impact.
Likely exposure
Exposure is limited to affected PAN-OS firewall versions where an authenticated administrator can use the XML API. Prisma Access firewalls are stated as not impacted. Organizations with older PAN-OS branches should prioritize version inventory and admin/API permission review.
Exploitation context
The provided sources do not state active exploitation, and the CVE is not marked KEV in the bundle. The vulnerability is still high risk because it is network-reachable, low complexity, and can escalate privileges after authenticated administrative API access.
Researcher notes
Focus validation on PAN-OS version, XML API authorization, and administrator account exposure. The source bundle does not provide exploit details, indicators of compromise, or active exploitation claims, so avoid asserting exploitation without additional evidence.
Mitigation direction
- Upgrade PAN-OS to the fixed release for the deployed branch.
- Prioritize 8.1.20-h1, 9.0.14-h3, 9.1.11-h2, 10.0.8, or 10.1.3 or later.
- Review Palo Alto Networks advisory for branch-specific upgrade guidance.
- Limit XML API permissions to administrators with a current business need.
- Remove or disable unnecessary administrative accounts.
Validation and detection
- Inventory all PAN-OS firewall versions and compare against the affected ranges.
- Confirm Prisma Access firewalls are excluded from this CVE scope.
- Review which administrators have XML API permissions.
- Check whether each device is at or above the fixed PAN-OS release.
- Review administrative and XML API activity for unexpected use.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-3058 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
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://security.paloaltonetworks.com/CVE-2021-3058CVE 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 Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.