CVE-2018-21135: netgear r6700_firmware Out-of-bounds Write
Vulnerability summary
CVE-2018-21135 is a high (CVSS 7.2) Out-of-bounds Write vulnerability in netgear r6700_firmware. EPSS estimates a 1.35% chance of exploitation in the next 30 days, higher than 71% of scored vulnerabilities.
Timeline
- 23-04-2020PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects R6700 before 1.0.1.48, R7500 before 1.0.0.124, R7800 before 1.0.2.58, R8900 before 1.0.4.2, R9000 before 1.0.4.2, WNDR3700v4 before 1.0.2.102, WNDR4300v1 before 1.0.2.104, WNDR4300v2 before 1.0.0.56, WNDR4500v3 before 1.0.0.56, and WNR2000v5-R2000 before 1.0.0.68.
CVSS metrics
4 scores · 2 sources · 3 versions- NVDNIST6.8MediumCVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.35%
Chance of exploitation in the next 30 days
Percentile
71%
Versus all other CVEs
30-day change
0.00 pp
From 1.35% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Netgear9 products
- r6700_firmware< 1.0.1.48
- r7500_firmware< 1.0.0.124
- r7800_firmware< 1.0.2.58
- r8900_firmware< 1.0.4.2
- r9000_firmware< 1.0.4.2
1 vendor · 9 products