CVE & CISA-KEV Catalog

CVE-2018-21093

HIGH
8.8
CVSS v3
NVD

Description

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D8500 before 1.0.3.42, EX3700 before 1.0.0.70, EX3800 before 1.0.0.70, EX6000 before 1.0.0.30, EX6100 before 1.0.2.24, EX6120 before 1.0.0.40, EX6130 before 1.0.0.22, EX6150 before 1.0.0.42, EX6200 before 1.0.3.88, EX7000 before 1.0.0.66, R6250 before 1.0.4.26, R6300-2CXNAS before 1.0.3.60, R6300v2 before 1.0.4.28, R6400 before 1.0.1.36, R6400v2 before 1.0.2.52, R6700 before 1.0.1.46, R6900 before 1.0.1.46, R7000 before 1.0.9.28, R7000P before 1.3.1.44, R6900P before 1.3.1.44, R7100LG before 1.0.0.46, R7300 before 1.0.0.68, R7900 before 1.0.2.10, R8000 before 1.0.4.18, R8000P before 1.3.0.10, R7900P before 1.3.0.10, R8500 before 1.0.2.122, R8300 before 1.0.2.122, RBW30 before 2.1.2.6, WN2500RPv2 before 1.0.0.54, and WNR3500Lv2 before 1.2.0.56.

CWE-787Out-of-bounds Write

How to fix

Remediation Available
d8500 firmwareNVD
Affected:< 1.0.3.42Fixed in:1.0.3.42CVE-2018-21093derived from NVD
ex3700 firmwareNVD
Affected:< 1.0.0.70Fixed in:1.0.0.70CVE-2018-21093derived from NVD
ex3800 firmwareNVD
Affected:< 1.0.0.70Fixed in:1.0.0.70CVE-2018-21093derived from NVD
ex6000 firmwareNVD
Affected:< 1.0.0.30Fixed in:1.0.0.30CVE-2018-21093derived from NVD
ex6100 firmwareNVD
Affected:< 1.0.2.24Fixed in:1.0.2.24CVE-2018-21093derived from NVD
ex6120 firmwareNVD
Affected:< 1.0.0.40Fixed in:1.0.0.40CVE-2018-21093derived from NVD
ex6130 firmwareNVD
Affected:< 1.0.0.22Fixed in:1.0.0.22CVE-2018-21093derived from NVD
ex6150 firmwareNVD
Affected:< 1.0.0.42Fixed in:1.0.0.42CVE-2018-21093derived from NVD
ex6200 firmwareNVD
Affected:< 1.0.3.88Fixed in:1.0.3.88CVE-2018-21093derived from NVD
ex7000 firmwareNVD
Affected:< 1.0.0.66Fixed in:1.0.0.66CVE-2018-21093derived from NVD
r6250 firmwareNVD
Affected:< 1.0.4.26Fixed in:1.0.4.26CVE-2018-21093derived from NVD
r6300-2cxnas firmwareNVD
Affected:< 1.0.3.60Fixed in:1.0.3.60CVE-2018-21093derived from NVD
r6300 firmwareNVD
Affected:< 1.0.4.28Fixed in:1.0.4.28CVE-2018-21093derived from NVD
r6400 firmwareNVD
Affected:< 1.0.2.52Fixed in:1.0.2.52CVE-2018-21093derived from NVD
r6700 firmwareNVD
Affected:< 1.0.1.46Fixed in:1.0.1.46CVE-2018-21093derived from NVD
r6900 firmwareNVD
Affected:< 1.0.1.46Fixed in:1.0.1.46CVE-2018-21093derived from NVD
r6900p firmwareNVD
Affected:< 1.3.1.44Fixed in:1.3.1.44CVE-2018-21093derived from NVD
r7000 firmwareNVD
Affected:< 1.0.9.28Fixed in:1.0.9.28CVE-2018-21093derived from NVD
r7000p firmwareNVD
Affected:< 1.3.1.44Fixed in:1.3.1.44CVE-2018-21093derived from NVD
r7100lg firmwareNVD
Affected:< 1.0.0.46Fixed in:1.0.0.46CVE-2018-21093derived from NVD
r7300 firmwareNVD
Affected:< 1.0.0.68Fixed in:1.0.0.68CVE-2018-21093derived from NVD
r7900 firmwareNVD
Affected:< 1.0.2.10Fixed in:1.0.2.10CVE-2018-21093derived from NVD
r7900p firmwareNVD
Affected:< 1.3.0.10Fixed in:1.3.0.10CVE-2018-21093derived from NVD
r8000 firmwareNVD
Affected:< 1.0.4.18Fixed in:1.0.4.18CVE-2018-21093derived from NVD
r8000p firmwareNVD
Affected:< 1.3.0.10Fixed in:1.3.0.10CVE-2018-21093derived from NVD
r8300 firmwareNVD
Affected:< 1.0.2.122Fixed in:1.0.2.122CVE-2018-21093derived from NVD
r8500 firmwareNVD
Affected:< 1.0.2.122Fixed in:1.0.2.122CVE-2018-21093derived from NVD
rbw30 firmwareNVD
Affected:< 2.1.2.6Fixed in:2.1.2.6CVE-2018-21093derived from NVD
wn2500rp firmwareNVD
Affected:< 1.0.0.54Fixed in:1.0.0.54CVE-2018-21093derived from NVD
wnr3500l firmwareNVD
Affected:< 1.2.0.56Fixed in:1.2.0.56CVE-2018-21093derived 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 RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

0.61%probability of exploitation in 30 days
45thpercentile

Moderate risk: more likely to be exploited than 45% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

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

CVESeverityCVSSEPSSExploitedFix
CVE-2025-22457Critical9.0100%KEV + RansomFix
CVE-2025-0282Critical9.0100%KEV + Ransom-
CVE-2015-3113Critical9.8100%KEVFix
CVE-2021-20038Critical9.8100%KEV + Ransom-
CVE-2023-4863High8.8100%KEVFix
CVE-2020-16040Medium6.5100%-Fix
Embed a live status badge for CVE-2018-21093
CVE-2018-21093 severity badge

Markdown

[![CVE-2018-21093](https://tridentstack.com/cve/badge/CVE-2018-21093.svg)](https://tridentstack.com/cve/CVE-2018-21093)

HTML

<a href="https://tridentstack.com/cve/CVE-2018-21093"><img src="https://tridentstack.com/cve/badge/CVE-2018-21093.svg" alt="CVE-2018-21093"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.