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No exploitation reportedFix available

CVE-2023-36187

No exploitation reported by the sources we read.

  • Published2023-09-01
  • Fixed in2.5.0.24
  • WeaknessCWE-120

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Buffer Overflow vulnerability in NETGEAR R6400v2 before version 1.0.4.118, allows remote unauthenticated attackers to execute arbitrary code via crafted URL to httpd.

Timeline

dates in UTC
  1. 2023-09-0116:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-36187?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-36187?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Netgear cbr40 firmwareversion to verify
BranchAffectedFixed in
2.5< 2.5.0.242.5.0.24
Netgear lax20 firmwareversion to verify
BranchAffectedFixed in
1.1< 1.1.6.341.1.6.34
Netgear mk62 firmwareversion to verify
BranchAffectedFixed in
1.1< 1.1.6.1221.1.6.122

13 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Netgear cbr40 firmware to 2.5.0.24

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2024-10-01
  • OpenCVESSVC decisionnone—
  • NVDCVSS 3.19.8read 2026-10-23
  • NVDweakness (CWE)CWE-120read 2026-10-23
  • FIRST EPSSEPSS score1.1 %2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2023-09-01
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2023-36187?

Buffer Overflow vulnerability in NETGEAR R6400v2 before version 1.0.4.118, allows remote unauthenticated attackers to execute arbitrary code via crafted URL to httpd.

Is CVE-2023-36187 actively exploited?

Active exploitation of CVE-2023-36187 has not been confirmed. Its EPSS score was 1.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-36187?

CVE-2023-36187 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

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