High severity · published Apr 28, 2020
CVE-2018-21203
Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker
8.8
CVSS
0.8%
EPSS
No
On KEV
Description
Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects R6100 before 1.0.1.20, R9000 before 1.0.2.52, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.50, and WNDR4500v3 before 1.0.0.50.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RF
R6100 Firmware · Netgear
before 1.0.1.20 · source: NVD
RF
R9000 Firmware · Netgear
before 1.0.2.52 · source: NVD
WF
Wndr3700 Firmware · Netgear
before 1.0.2.96 · source: NVD
WF
Wndr4300 Firmware · Netgear
before 1.0.2.98; before 1.0.0.50 · source: NVD
WF
Wndr4500 Firmware · Netgear
before 1.0.0.50 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-21203
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-21203
Vendor Advisory
https://kb.netgear.com/000055146/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-PSV-2017-2589
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