---
title: "CVE-2022-40799: D-Link DNR-322L Download of Code Without Integrity Check Vulnerability"
url: https://erroneo.us/security/cve/CVE-2022-40799/
description: "CVE-2022-40799 (D-Link DNR-322L): Exploited in the wild (CISA KEV). Data Integrity Failure in 'Backup Config' in D-Link DNR-322L"
type: vulnerability-record
section: "Security Digest"
date_published: 2022-11-29
date_modified: 2025-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2022-40799"
kev: true
cvss: 8.8
epss: 0.3365
license: All rights reserved. Quote with attribution and a link.
---

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

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run D-Link DNR-322L. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2025-08-05, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-08-26 ; treat that as the outer limit, not the target.
- EPSS 33.7% , percentile 98: FIRST’s model estimates a 33.7% chance of exploitation activity in the next 30 days, higher than 98% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.

## What it is

Data Integrity Failure in 'Backup Config' in D-Link DNR-322L

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 8.8 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2025-08-05; federal due date 2025-08-26. Known ransomware use: Unknown.
- CISA 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.
- CISA SSVC assessment: exploitation active , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 33.65% probability of exploitation activity in the next 30 days; percentile 98.

## Sources

- [Listed in CISA KEV notes (dlink.com)](https://www.dlink.com/uk/en/products/dnr-322l-cloud-network-video-recorder)
- [CVE.org record CVE-2022-40799](https://www.cve.org/CVERecord?id=CVE-2022-40799)
- [NVD entry CVE-2022-40799](https://nvd.nist.gov/vuln/detail/CVE-2022-40799)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-40799)
- [gitlab.com](https://gitlab.com/lu-ka/cve-2022-40799)

---
Source page: https://erroneo.us/security/cve/CVE-2022-40799/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt