CVE-2022-40799
D-Link DNR-322L Download of Code Without Integrity Check Vulnerability
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 status
CISA Known Exploited Vulnerabilities
Listed by CISA on 5 August 2025. US federal agencies were required to remediate it by 26 August 2025.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 33.7%, which is higher than 98.4% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Frequently asked questions
Is CVE-2022-40799 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2022-40799.
What does CVE-2022-40799 affect?
CVE-2022-40799 affects 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.
How severe is CVE-2022-40799?
CVE-2022-40799 is rated HIGH with a CVSS base score of 8.8. EPSS puts the probability of exploitation in the next 30 days at 33.7%, higher than 98.4% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 26 August 2025.
How should organisations respond to CVE-2022-40799?
Apply the vendor patch for D-Link DNR-322L as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.