What is CVE-2022-40799?

CVE-2022-40799 is a high-severity vulnerability in Dlink Dnr-322l, classified under Download of Code Without Integrity Check. CVSS score: 8.8/10. Published 2022-11-29.

How severe is CVE-2022-40799?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2022-40799 known to be exploited?

Yes. CVE-2022-40799 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-08-05), indicating it is being actively exploited. 7 public proof-of-concept repositories are indexed.

Vulnerability in Dlink Dnr-322l

CVE-2022-40799

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.

EPSS: 0.313 (98.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-494 — Download of Code Without Integrity Check

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2025-08-05. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2025-08-26.

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (Product)

Frequently asked questions

What is CVE-2022-40799?: CVE-2022-40799 is a high-severity vulnerability in Dlink Dnr-322l, classified under Download of Code Without Integrity Check. CVSS score: 8.8/10. Published 2022-11-29.
How severe is CVE-2022-40799?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2022-40799 known to be exploited?: Yes. CVE-2022-40799 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-08-05), indicating it is being actively exploited. 7 public proof-of-concept repositories are indexed.