Is CVE-2022-40799 in the CISA KEV catalog?

Yes. CVE-2022-40799 is on the CISA Known Exploited Vulnerabilities list, added 2025-08-05.

What is the CVSS severity of CVE-2022-40799?

CVE-2022-40799 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2022-40799?

CVE-2022-40799 has an EPSS score of 31.33% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2022-40799?

No published fix for CVE-2022-40799 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2025-08-26. Apply the vendor's mitigations per CISA's guidance.

CVE & CISA-KEV Catalog

CVE-2022-40799

HIGHCISA KEVEPSS 98th pctl

8.8

CVSS v3

NVD

Description

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.

CWE-494

How to fix

Actively exploited, no published fix found yet

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.

Federal remediation due: 2025-08-26

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

31.33%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

D-Link DNR-322L Download of Code Without Integrity Check Vulnerability

D-Link DNR-322L contains a download of code without integrity check vulnerability that could allow an authenticated attacker to execute OS level commands on the device. The impacted products could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

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

Remediation due: 2025-08-26

References

Exploit1

gitlab.com

Government Resource1

cisa.gov

Product1

dlink.com

Related Vulnerabilities

Other CWE-494 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-5398	High	7.5	88%	-	Fix
CVE-2026-3502	High	7.8	5.8%	KEV	Fix
CVE-2018-19234	High	8.8	3.3%	-	Fix
CVE-2016-6567	Critical	9.8	2.9%	-	-
CVE-2016-6564	High	8.1	2.7%	-	-
CVE-2001-1125	Critical	9.8	2.5%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-03.