Security readout for executives and security teams
Plain-English summary
Affected Array Networks SSL VPN gateways can be compromised remotely without credentials. An attacker may browse gateway files and progress to running code, potentially exposing sensitive information, changing systems, or disrupting service. CISA lists this vulnerability as known exploited, making exposed legacy appliances an urgent business risk.
Executive priority
Treat this as an immediate remediation and compromise-assessment priority. It combines unauthenticated remote code execution, critical technical severity, likely internet exposure, and confirmed known exploitation. Owners should promptly identify affected appliances, reduce exposure, obtain current vendor remediation guidance, and investigate potentially exposed systems.
Technical view
CVE-2023-28461 affects Array AG Series and vxAG versions 9.4.0.481 and earlier. An unauthenticated attacker can abuse a flags attribute in an HTTP header to browse the gateway filesystem, then exploit a vulnerable URL for remote code execution. The CVSS 3.1 score is 9.8 and the weakness is classified as missing authentication, CWE-306.
Likely exposure
Organizations are exposed if they operate Array AG Series or vxAG appliances at version 9.4.0.481 or earlier, particularly where the affected SSL VPN service is network-accessible. The supplied sources do not identify later affected versions, a confirmed fixed version, or configuration-specific prerequisites.
Exploitation context
CISA’s Known Exploited Vulnerabilities catalog supports active exploitation in the wild. Exploitation requires no authentication, user interaction, or elevated privileges according to the CVSS vector. The supplied sources do not describe campaign scope, attacker identities, exploitation frequency, or reliable indicators of compromise.
Researcher notes
The public description establishes an unauthenticated filesystem-browsing primitive followed by remote code execution through an unspecified vulnerable URL. The 2023 vendor advisory said a fixed release would be available soon, but the supplied bundle does not confirm its version or availability. Avoid assuming that any particular later release is fixed without current vendor confirmation.
Mitigation direction
- Inventory Array AG Series and vxAG appliances and record their exact software versions.
- Obtain current Array Networks guidance and upgrade to a vendor-confirmed fixed release.
- Until remediated, restrict affected gateway reachability where operationally feasible.
- Increase monitoring around affected gateways and preserve relevant HTTP and system logs.
- If compromise is suspected, isolate the appliance and begin incident response procedures.
Validation and detection
- Confirm whether any appliance runs version 9.4.0.481 or earlier.
- Verify which affected gateway services are reachable from untrusted networks.
- Confirm the installed release is identified as fixed by current vendor guidance.
- Review HTTP logs for anomalous flags attributes and access to unusual URLs.
- Examine gateway integrity, accounts, configuration, and filesystem changes for unexplained activity.
Public sources used
The source record changed after analysis: Material source record changed after analysis.
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-306: 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 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-2023-28461 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
- 9.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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.
CISA KEV status
SSVC decision data
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:H3.95.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE publishedCVE Program
The CVE record was published.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Added to KEVCISA-ADP
CISA Known Exploited Vulnerabilities metadata lists this CVE as known exploited.
- ADP timelineCISA-ADP
CVE-2023-28461 added to CISA KEV
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2024-11-25T00:00:00.000Z: CVE-2023-28461 added to CISA KEV
Source materials
- CVE List V5 sourceCVE List V5
- https://support.arraynetworks.net/prx/001/http/supportportal.arraynetworks.net/documentation/FieldNotice/Array_Networks_Security_Advisory_for_Remote_Code_Execution_Vulnerability_AG.pdfCVE reference, mitre
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28461CVE reference, CISA-ADP · government-resource
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.
Missing Authentication for Critical Function
Missing Authentication for Critical Function represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.