# CVE-2022-40799: D-Link DNR-322L command execution in Backup Config

Source: https://junglewise.ai/threats/cve-2022-40799-d-link-dnr-322l-command-execution-in-backup-config  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-08-05. Updated: 2026-05-15  
License: CC BY 4.0 with a link back

CVE-2022-40799 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2025-08-05

The D-Link DNR-322L is a network video recorder used to manage and store security camera footage. A security flaw in the device's configuration backup feature allows an attacker to take full control of the system and execute unauthorized commands. Because this product is end-of-life, no official security patches are expected, and users are advised to stop using the device immediately to prevent potential data breaches or service disruptions.

Technologies: [D-Link DNR-322L](https://junglewise.ai/threats/technologies/dnr-322l). Vendors: [D-Link](https://junglewise.ai/threats/vendors/d-link).

## Quick answers

**Is CVE-2022-40799 exploited in the wild?** Yes. CVE-2022-40799 is known to be exploited in the wild, first recorded on 5 August 2025. Treat it as urgent.

**How severe is CVE-2022-40799?** Critical severity, with a CVSS score of 8.8, published 5 August 2025.

**Which products and versions are affected?** D-Link DNR-322L Firmware <= 2.60B15.

**Is there a fix for CVE-2022-40799?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2022-40799 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2022-40799?** Check whether you run D-Link DNR-322L or D-Link DNR-322L Firmware at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A vulnerability classified as CWE-494 (Download of Code Without Integrity Check) exists in the 'Backup Config' component of D-Link DNR-322L devices running firmware version 2.60B15 and earlier. The flaw stems from a failure to verify the integrity of data during configuration operations, which can be leveraged to achieve remote code execution. An authenticated attacker with network access can exploit this to execute arbitrary OS-level commands with high privileges. This vulnerability has been observed in the wild and is included in the CISA Known Exploited Vulnerabilities (KEV) catalog. As the device is end-of-life (EoL), users are encouraged to decommission the hardware.

## Affected products

- D-Link DNR-322L Firmware <= 2.60B15

## Timeline

- 2022-11-29: disclosed: Initial NVD publication
- 2025-08-05: kev added: Added to CISA Known Exploited Vulnerabilities catalog