IRONSMITHINTEL
HIGHCVSS8.8
|
Actively Exploited
|CISA KEV|CVE-2022-40799|Auth: low — authenticated user|Reboot: required|Manual only

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 17, 2026
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

Manual remediation steps

1
Identify affected hosts: query inventory for general installs in scope.
2
Apply the vendor security update referenced in CVE-2022-40799's advisory. No specific KB/version is encoded yet — consult the linked MSRC/vendor URL.
3
Verify the fix per the vendor's published verification steps.
4
Document the remediation in your change ticket and re-scan with your vulnerability scanner to confirm closure.
PowerShell automationComing soon

No tested PowerShell script for this entry yet. We’re prioritising automation based on user demand.

References

↗ CVE-2022-40799↗ MSRC Advisory↗ NVD↗ Vendor Advisory