What is CVE-2018-21203?

CVE-2018-21203 is a high-severity vulnerability in Netgear R6100, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2020-04-28.

How severe is CVE-2018-21203?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Netgear R6100

CVE-2018-21203

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…

Vulnerability class: Buffer Overflow

EPSS: 0.008 (50.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Netgear R6100
Netgear R6100_firmware
Netgear R9000
Netgear R9000_firmware
Netgear Wndr3700 — versions v4
Netgear Wndr3700_firmware
Netgear Wndr4300 — versions v2
Netgear Wndr4300_firmware
Netgear Wndr4500 — versions v3
Netgear Wndr4500_firmware

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2018-21203?: CVE-2018-21203 is a high-severity vulnerability in Netgear R6100, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2020-04-28.
How severe is CVE-2018-21203?: High severity. CVSS v3 base score is 8.8 out of 10.