D-Link DNR-322L Download of Code Without Integrity Check Vulnerability (CVE-2022-40799)

D-Link DNR-322L contains a download of code without integrity check vulnerability that could allow an authenticated attacker to execute OS level commands on the device. The impacted products could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

Published Nov 29, 2022 · Updated May 29, 2026

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Why patchRisk explained in plain English

Worst-case scenarioIf unpatched

A remote attacker, with a low-privilege account, can achieve full data confidentiality loss, arbitrary modification of data, complete denial of service or system unavailability. Federal agencies are required to remediate by 2025-08-26 under CISA BOD 22-01.

How the attack worksNo clicks needed

This is a Software Vulnerability (CWE-494) (CWE-494) vulnerability in D-Link DNR-322L. Data Integrity Failure in 'Backup Config' in D-Link DNR-322L <= 2.60B15 allows an authenticated attacker to execute OS level commands on the device. Exploitation requires remote network access, low attack complexity, a low-privilege authenticated account, and no user interaction required.

Am I affected?Quick check

Probably yes if any of these apply:

●IT Security

●Running dnr-322l firmware: v ≤ 2.60b15

Real-world incidentsWhat we've seen

Active exploitation documented in the wild. Threat-research write-up: https://gitlab.com/lu-ka/cve-2022-40799

How to patch

Get the fix

Apply the fixed package from your vendor. The advisory lists affected versions and the exact fixed build.

↗ Vendor advisory

Manual remediation steps

Identify affected hosts: query inventory for general installs in scope.