CVE-2021-45606
CVE-2021-45606 is a medium-severity vulnerability in Netgear R6400 Firmware with a CVSS 3.x base score of 4.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: Medium (CVSS 3.x base score 4.5)
- CVSS v2: 6.5
- EPSS exploit prediction: 1% (56th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Netgear R6400 Firmware
- Published:
- Last modified:
Description
Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects R6400 before 1.0.1.70, R7000 before 1.0.11.126, R7900 before 1.0.4.46, R7900P before 1.4.2.84, R7960P before 1.4.2.84, R8000 before 1.0.4.74, R8000P before 1.4.2.84, RAX200 before 1.0.4.120, RS400 before 1.5.1.80, R6400v2 before 1.0.4.118, R7000P before 1.3.3.140, RAX80 before 1.0.4.120, R6700v3 before 1.0.4.118, R6900P before 1.3.3.140, and RAX75 before 1.0.4.120.
Frequently asked questions
- What is CVE-2021-45606?
- Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects R6400 before 1.0.1.70, R7000 before 1.0.11.126, R7900 before 1.0.4.46, R7900P before 1.4.2.84, R7960P before 1.4.2.84, R8000 before 1.0.4.74, R8000P before 1.4.2.84, RAX200 before 1.0.4.120, RS400 before 1.5.1.80, R6400v2 before 1.0.4.118, R7000P before 1.3.3.140, RAX80 before 1.0.4.120, R6700v3 before 1.0.4.118, R6900P before 1.3.3.140, and RAX75 before 1.0.4.120.
- How severe is CVE-2021-45606?
- CVE-2021-45606 has a CVSS 3.x base score of 4.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-45606 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-45606?
- CVE-2021-45606 primarily affects Netgear R6400 Firmware. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-45606?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-45606 published?
- CVE-2021-45606 was published on 2021-12-26 and last updated on 2026-06-17.
References
Affected products (15)
- cpe:2.3:o:netgear:r6400_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r7000_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r7900_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r7900p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r7960p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r8000_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r8000p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r7000p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r6900p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r6700v3_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r6400v2_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rax200_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rax80_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rax75_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rs400_firmware:*:*:*:*:*:*:*:*
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