---
title: "CVE-2023-28461: Array Networks AG and vxAG ArrayOS Missing Authentication for Critical Function Vulnerability"
url: https://erroneo.us/security/cve/CVE-2023-28461/
description: "CVE-2023-28461 (Array Networks AG/vxAG ArrayOS): Exploited in the wild (CISA KEV). Array Networks Array AG Series and vxAG (9.4.0.481 and earlier) allow…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-03-15
date_modified: 2026-08-05
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-28461"
kev: true
cvss: 9.8
epss: 0.68079
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-28461: Array Networks AG and vxAG ArrayOS Missing Authentication for Critical Function Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Array Networks AG/vxAG ArrayOS. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2024-11-25, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2024-12-16 ; treat that as the outer limit, not the target. CISA also lists it as known to be used in ransomware campaigns .
- EPSS 68.1% , percentile 99: FIRST’s model estimates a 68.1% chance of exploitation activity in the next 30 days, higher than 99% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

## What it is

Array Networks Array AG Series and vxAG (9.4.0.481 and earlier) allow remote code execution. An attacker can browse the filesystem on the SSL VPN gateway using a flags attribute in an HTTP header without authentication. The product could then be exploited through a vulnerable URL. The 2023-03-09 vendor advisory stated "a new Array AG release with the fix will be available soon."

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2024-11-25; federal due date 2024-12-16. Known ransomware use: Known.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 68.08% probability of exploitation activity in the next 30 days; percentile 99.

## Sources

- [Listed in CISA KEV notes (support.arraynetworks.net)](https://support.arraynetworks.net/prx/001/http/supportportal.arraynetworks.net/documentation/FieldNotice/Array_Networks_Security_Advisory_for_Remote_Code_Execution_Vulnerability_AG.pdf)
- [CVE.org record CVE-2023-28461](https://www.cve.org/CVERecord?id=CVE-2023-28461)
- [NVD entry CVE-2023-28461](https://nvd.nist.gov/vuln/detail/CVE-2023-28461)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28461)

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Source page: https://erroneo.us/security/cve/CVE-2023-28461/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt