# CVE-2021-41506: Hardcoded credentials in n/a

> Static root credentials in DVR/NVR/IP camera firmware binaries allow attackers to gain unauthorized root access and execute arbitrary code.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Jun 2022
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-6q5r-54qp-4cp9

## What is CVE-2021-41506?

CVE-2021-41506 is a critical vulnerability in n/a, published on 30 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Xiaongmai AHB7008T-MH-V2, AHB7804R-ELS, AHB7804R-MH-V2, AHB7808R-MS-V2, AHB7808R-MS, AHB7808T-MS-V2, AHB7804R-LMS, HI3518_50H10L_S39 V4.02.R11.7601.Nat.Onvif.20170420, V4.02.R11.Nat.Onvif.20160422, V4.02.R11.7601.Nat.Onvif.20170424, V4.02.R11.Nat.Onvif.20170327, V4.02.R11.Nat.Onvif.20161205, V4.02.R11.Nat.20170301, V4.02.R12.Nat.OnvifS.20170727 is affected by a backdoor in the macGuarder and dvrHelper binaries of DVR/NVR/IP camera firmware due to static root account credentials in the system.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2021-41506?

It affects 8 products.


Products: Xiongmaitech Ahb7008t-Mh-V2 Firmware, Xiongmaitech Ahb7804r-Els Firmware, Xiongmaitech Ahb7804r-Lms Firmware, Xiongmaitech Ahb7804r-Mh-V2 Firmware, Xiongmaitech Ahb7808r-Ms-V2 Firmware, Xiongmaitech Ahb7808r-Ms Firmware, Xiongmaitech Ahb7808t-Ms-V2 Firmware, Xiongmaitech Hi3518e 50h10l S39 Firmware.

## How do I fix CVE-2021-41506?

No fix has been published for CVE-2021-41506 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-41506 being exploited?

There is no known exploitation of CVE-2021-41506 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2020-22253](https://insights.sbomify.com/CVE-2020-22253/): Auth bypass in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-41506 and fix it if it is affected.

What it is: CVE-2021-41506 is a critical vulnerability in n/a, published on 30 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-41506 in the wild and no public exploit code.

Affected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-41506/ (Markdown: https://insights.sbomify.com/CVE-2021-41506/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-41506
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-41506
- OSV: https://osv.dev/vulnerability/CVE-2021-41506

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-41506/
Summaries are generated and may contain mistakes; the official description above is the record.