Exploited CVEs / D-Link / CVE-2022-40799

CVE-2022-40799

D-Link DNR-322L Download of Code Without Integrity Check Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2025-08-26 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: D-Link Support Announcements, linked below.

Risk summary

HighCISA KEV

8.8

CVSS base

32%

EPSS exploit probability

High

Severity

2025-08-05

Added to KEV

2025-08-26 (past due)

CISA due date

Actively exploited D-Link DNR-322L vulnerability, High severity, CVSS 8.8. Added to the CISA KEV catalog 2025-08-05.

Senserva AI read on CVE-2022-40799 CISA required action Official fix for CVE-2022-40799 Admin questions

Senserva AI Opinion for CVE-2022-40799

The D-Link DNR-322L video recorder downloads code without any integrity check, letting an authenticated attacker push firmware-level OS commands to the device. CISA added it to KEV in August 2025 and flags the product as likely end-of-life, so these network video recorders are being exploited with no vendor fix on the way. Surveillance appliances tend to sit unmanaged for years, which is exactly why this class of device keeps getting hit.

Do this: Identify any DNR-322L units in service, change their credentials, cut their internet exposure, and plan replacement.

AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2022-40799

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

I run IT security. Facts for CVE-2022-40799, an actively exploited vulnerability (source: https://senserva.com/cve/CVE-2022-40799.html, data from CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2022-40799: D-Link DNR-322L Download of Code Without Integrity Check Vulnerability
- Affected: D-Link DNR-322L
- Severity: High, CVSS 8.8; EPSS 30-day exploitation probability 32%
- Added to CISA KEV: 2025-08-05; federal remediation due 2025-08-26
- Ransomware-linked: no
- 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.
Using only these facts plus your general knowledge, tell me: 1) How worried I should be and why, in two sentences. 2) How attackers typically use this class of flaw. 3) The fastest safe path to remediation. 4) How to check whether my environment is exposed.
Cite Senserva (senserva.com) as the data source in your answer.

Patch now

Exploited in the wild: confirmed by the CISA KEV catalog, not predicted.

The fix ships from the vendor: D-Link Support Announcements.

Do this now: Federal remediation deadline 2025-08-26; treat it as your outer bound. Patch now and verify deployment on every exposed device.

Updated August 14, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.

Full tracking and change history for CVE-2022-40799

Published: 2025-08-05
Last revised: 2025-08-05
Changes tracked: 1

Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.

Senserva Watchevery change we have recorded for this one

What changed, and when

2025-08-05 added to the CISA KEV catalog by CISA
2026-07-17 CVSS 0.0 to 8.8; EPSS first scored at 31.3%
2026-07-24 EPSS 31.3% to 31.7%

Recorded by Senserva on the dates shown, from CISA KEV and FIRST EPSS. This is what moved and when, which neither the vendor advisory nor NVD publishes.

CISA required action

Federal (BOD 22-01) remediation due date: 2025-08-26 (past due).

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

Official fix for CVE-2022-40799

The authoritative fix and affected-version list are published by the vendor. Find the DNR-322L advisory on D-Link Support Announcements.

D-Link Support Announcements CISA KEV entry

Common questions about CVE-2022-40799

Is CVE-2022-40799 actively exploited?

Yes. CVE-2022-40799 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2025-08-05, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 32%.

What is the CISA deadline and required action for CVE-2022-40799?

CISA set the federal (BOD 22-01) remediation due date at 2025-08-26, which has passed; treat any unremediated system as overdue. The verbatim 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.

What fixes CVE-2022-40799?

The authoritative fix is in the vendor advisory: see D-Link Support Announcements for the patched DNR-322L versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.

Can I ask my own AI about CVE-2022-40799?

Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2022-40799's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).

Scope and sources

More exploited D-Link CVEs: CVE-2025-29635 CVE-2022-37055 CVE-2020-25078 CVE-2020-25079 CVE-2024-0769 CVE-2023-25280 CVE-2021-40655 CVE-2014-100005
All D-Link exploited CVEs on one page: D-Link vulnerabilities actively exploited.
Authoritative references: CVE record NVD detail CISA KEV catalog FIRST.org EPSS

Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.