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CVE-2019-20739

24
FAUCET Score

CVE-2019-20739 describes a buffer overflow vulnerability affecting NETGEAR R8500 devices running firmware versions prior to v1.0.2.128. This high-severity flaw (CVSS 8.8) allows an unauthenticated attacker on the local network to execute arbitrary code, leading to complete compromise of confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or Nuclei templates are currently available, and there is minimal community discussion, the vulnerability's potential impact is significant. There is no evidence of active exploitation, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.2.128CPE matchmatch criteria
cpe:2.3:o:netgear:r8500_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.62%
Probability of exploitation in next 30 days
EPSS Percentile
46.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0062 is in the 48th percentile among its peer group of 1,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

kb.netgear.com / 000061179/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-R8500-PSV-2017-0636
Vendor Advisory