Is CVE-2019-20740 in the CISA KEV catalog?

No. CVE-2019-20740 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-20740?

CVE-2019-20740 has a CVSS v3 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2019-20740?

CVE-2019-20740 has an EPSS score of 0.44% (36th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-20740?

Upgrade dgn2200 firmware to 1.0.0.110 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2019-20740

MEDIUM

6.8

CVSS v3

NVD

Description

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects DGN2200v4 before 1.0.0.110, DGND2200Bv4 before 1.0.0.109, R7300 before 1.0.0.70, R8300 before 1.0.2.130, and R8500 before 1.0.2.130.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

dgn2200 firmwareNVD

Affected:< 1.0.0.110Fixed in:1.0.0.110CVE-2019-20740derived from NVD

dgnd2200b firmwareNVD

Affected:< 1.0.0.109Fixed in:1.0.0.109CVE-2019-20740derived from NVD

r7300 firmwareNVD

Affected:< 1.0.0.70Fixed in:1.0.0.70CVE-2019-20740derived from NVD

r8300 firmwareNVD

Affected:< 1.0.2.130Fixed in:1.0.2.130CVE-2019-20740derived from NVD

r8500 firmwareNVD

Affected:< 1.0.2.130Fixed in:1.0.2.130CVE-2019-20740derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.44%probability of exploitation in 30 days

36thpercentile

Low risk: more likely to be exploited than 36% of all known CVEs.

References

Vendor Advisory1

kb.netgear.com

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	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 2024-11-21.