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.
do firstApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Can a WAF block it? Partly. The bug can be reached over the network, so generic WAF rules may stop some attacks. Its weakness type is unknown, so we cannot be more precise.
Also consider: patch
Based on the weakness type only; no CVE-specific evidence yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.
Is CVE-2022-40799 being exploited?
Yes. CVE-2022-40799 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2022-40799?
CVE-2022-40799 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2022-40799?
Not known from our data. No patch reference has been recorded for CVE-2022-40799, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2022-40799 affect?
CVE-2022-40799 affects dlink:dnr-322l_firmware. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
cisa ssvc
- exploitation
- active
- automatable
- no
- technical impact
- total
Assessed by CISA 5 Aug 2025 (SSVC 2.0.3).
timeline
- 29 Nov 2022Published
- 5 Aug 2025Added to CISA KEV (exploited in the wild) · 980 days (about 3 years) later
- 5 Aug 2025CISA SSVC assessment: exploitation active · same day later
- 26 Aug 2025CISA remediation due date (US federal agencies) · 21 days later
- 21 Oct 2025CVE record last updated · 57 days later
- 2 Nov 2026Analysed by vulneraibility.com · 377 days (about 1 year) later
- Linkgitlab.com /lu-ka/cve-2022-40799
- Linkdlink.com /uk/en/products/dnr-322l-cloud-network-video-recorder
- Linkcisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-40799
sources
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA KEV catalog: exploitation, date added, due date
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.