Home/CVE/Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D6220
CVE

CVE-2021-45638

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D6220

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D6220 before 1.0.0.68, D6400 before 1.0.0.102, D7000v2 before 1.0.0.74, D8500 before 1.0.3.60, DC112A before 1.0.0.56, R6300v2 before 1.0.4.50, R6400 before 1.0.1.68, R7000 before 1.0.11.116, R7100LG before 1.0.0.70, RBS40V before 2.6.2.8, RBW30 before 2.6.2.2, RS400 before 1.5.1.80, R7000P before 1.3.2.132, and R6900P before 1.3.2.132.

CRITICAL · CVSS 9.6 EPSS 0.0036
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
▤

Affected Products & Versions

14
netgear d6220 firmware< 1.0.0.68
netgear d6400 firmware< 1.0.0.102
netgear d7000v2 firmware< 1.0.0.74
netgear d8500 firmware< 1.0.3.60
netgear dc112a firmware< 1.0.0.56
netgear r6300v2 firmware< 1.0.4.50
netgear r6400 firmware< 1.0.1.68
netgear r7000 firmware< 1.0.11.116
▣

Scoring & Timeline

9.6
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 Dec 2021 · 01:15 AM
CVSS VectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://kb.netgear.com/000064496/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-PSV-2020-0464PatchVendor Advisory
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