Cyber Resilience

CVE-2021-45526

High

Published: 26 December 2021

Published
26 December 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 7.3 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:H
EPSS Score 0.0040 61.2th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-45526 is a high-severity Classic Buffer Overflow (CWE-120) vulnerability in Netgear Ex6000 Firmware. Its CVSS base score is 7.3 (High).

Operationally, ranked in the top 38.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Certain NETGEAR devices are affected by a buffer overflow by an authenticated user. This affects EX6000 before 1.0.0.38, EX6120 before 1.0.0.48, EX6130 before 1.0.0.30, R6300v2 before 1.0.4.52, R6400 before 1.0.1.52, R7000 before 1.0.11.126, R7900 before 1.0.4.30, R8000 before 1.0.4.52, R7000P…

more

before 1.3.2.124, R8000P before 1.4.1.50, RAX80 before 1.0.3.88, R6900P before 1.3.2.124, R7900P before 1.4.1.50, and RAX75 before 1.0.3.88.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

netgear
ex6000 firmware
≤ 1.0.0.38
netgear
ex6120 firmware
≤ 1.0.0.48
netgear
ex6130 firmware
≤ 1.0.0.30
netgear
r6300v2 firmware
≤ 1.0.4.52
netgear
r6400 firmware
≤ 1.0.1.52
netgear
r7000 firmware
≤ 1.0.11.126
netgear
r7900 firmware
≤ 1.0.4.30
netgear
r8000 firmware
≤ 1.0.4.52
netgear
r8000p firmware
≤ 1.4.1.50
netgear
r7000p firmware
≤ 1.3.2.124
+4 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-120

Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.

References