CVE-2018-21162
CVE-2018-21162 is a critical-severity vulnerability in Netgear D6400 Firmware with a CVSS 3.x base score of 9.8. 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-78.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 3% (87th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-78
- Affected product: Netgear D6400 Firmware
- Published:
- Last modified:
Description
Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects D6400 before 1.0.0.78, EX6200 before 1.0.3.86, EX7000 before 1.0.0.64, R6250 before 1.0.4.8, R6300v2 before 1.0.4.6, R6400 before 1.0.1.12, R6700 before 1.0.1.16, R7000 before 1.0.7.10, R7100LG before 1.0.0.42, R7300DST before 1.0.0.44, R7900 before 1.0.1.12, R8000 before 1.0.3.36, R8300 before 1.0.2.74, R8500 before 1.0.2.74, WNDR3400v3 before 1.0.1.14, and WNR3500Lv2 before 1.2.0.48.
Frequently asked questions
- What is CVE-2018-21162?
- Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects D6400 before 1.0.0.78, EX6200 before 1.0.3.86, EX7000 before 1.0.0.64, R6250 before 1.0.4.8, R6300v2 before 1.0.4.6, R6400 before 1.0.1.12, R6700 before 1.0.1.16, R7000 before 1.0.7.10, R7100LG before 1.0.0.42, R7300DST before 1.0.0.44, R7900 before 1.0.1.12, R8000 before 1.0.3.36, R8300 before 1.0.2.74, R8500 before 1.0.2.74, WNDR3400v3 before 1.0.1.14, and WNR3500Lv2 before 1.2.0.48.
- How severe is CVE-2018-21162?
- CVE-2018-21162 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-21162 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-21162?
- CVE-2018-21162 primarily affects Netgear D6400 Firmware. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2018-21162?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2018-21162 published?
- CVE-2018-21162 was published on 2020-04-23 and last updated on 2026-06-17.
References
Affected products (16)
- cpe:2.3:o:netgear:d6400_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:ex6200_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:ex7000_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r6250_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r6300_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r6400_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r7000_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r7100lg_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r7300dst_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r7900_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r8000_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r8300_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r8500_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:wndr3400_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:wnr3500l_firmware:*:*:*:*:*:*:*:*
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