NETGEAR EX3800 Firmware vulnerabilities

40 CVEs affecting NETGEAR EX3800 Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-9210, published 2026-06-09.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2022-27643, published 2023-03-29. High severity, CVSS 8.8. EPSS: 25.2% chance of exploitation in the next 30 days. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Authentication is not required to exploit this…
CVE-2021-34991, published 2021-11-15. High severity, CVSS 8.8. EPSS: 5.7% chance of exploitation in the next 30 days. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400v2 1.0.4.106_10.0.80 routers. Authentication is not required to exploit this…
CVE-2021-45621, published 2021-12-26. Critical severity, CVSS 9.8. EPSS: 2% chance of exploitation in the next 30 days. Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, CBR750 before 3.2.18.2, EAX20 before 1.0.0.58, EAX80 before 1.0.1.68,…
CVE-2020-35800, published 2020-12-30. Critical severity, CVSS 9.4. EPSS: 1.6% chance of exploitation in the next 30 days. Certain NETGEAR devices are affected by incorrect configuration of security settings. This affects AC2100 before 1.2.0.72, AC2400 before 1.2.0.72, AC2600 before 1.2.0.72, CBK40 before 2.5.0.10, CBR40…
CVE-2018-21156, published 2020-04-27. High severity, CVSS 7.2. EPSS: 1.4% chance of exploitation in the next 30 days. Certain NETGEAR devices are affected by a buffer overflow by an authenticated user. This affects D6220 before 1.0.0.38, D6400 before 1.0.0.74, D7000v2 before 1.0.0.74, D8500 before 1.0.3.39,…
CVE-2020-35796, published 2020-12-30. Critical severity, CVSS 9.8. EPSS: 1.3% chance of exploitation in the next 30 days. Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects CBR40 before 2.5.0.10, D6220 before 1.0.0.60, D6400 before 1.0.0.94, D7000v2 before 1.0.0.62,…
CVE-2018-21134, published 2020-04-23. Critical severity, CVSS 9.8. EPSS: 1.3% chance of exploitation in the next 30 days. Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects R6700 before 1.0.1.48, R7900 before 1.0.2.16, R6900 before 1.0.1.48, R7000P before…
CVE-2018-21163, published 2020-04-23. High severity, CVSS 7.2. EPSS: 1.1% chance of exploitation in the next 30 days. Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects DGN2200Bv4 before 1.0.0.102, DGN2200v4 before 1.0.0.102, EX3700 before 1.0.0.70, EX3800…
CVE-2021-38514, published 2021-08-11. Low severity, CVSS 2.7. EPSS: 0.8% chance of exploitation in the next 30 days. Certain NETGEAR devices are affected by authentication bypass. This affects D3600 before 1.0.0.72, D6000 before 1.0.0.72, D6100 before 1.0.0.63, D6200 before 1.1.00.34, D6220 before 1.0.0.48, D6400…
CVE-2019-20756, published 2020-04-16. Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days. Certain NETGEAR devices are affected by reflected XSS. This affects EX7000 before 1.0.0.64, EX6200 before 1.0.3.86, EX6150 before 1.0.0.38, EX6130 before 1.0.0.22, EX6120 before 1.0.0.40, EX6100…

Latest

CVE-2026-9210, published 2026-06-09. Medium severity, CVSS 4.5. EPSS: 0.3% chance of exploitation in the next 30 days. Insufficient input validation vulnerability in the listed NETGEAR models allows authenticated administrators connected to the local network to make unauthorized modification of router software and…
CVE-2021-34983, published 2024-05-07. Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days. NETGEAR Multiple Routers httpd Missing Authentication for Critical Function Information Disclosure Vulnerability. This vulnerability allows network-adjacent attackers to disclose sensitive…
CVE-2021-34982, published 2024-05-07. High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days. NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected…
CVE-2021-45670, published 2021-12-26. Medium severity, CVSS 4.8. EPSS: 0.4% chance of exploitation in the next 30 days. Certain NETGEAR devices are affected by stored XSS. This affects CBR40 before 2.5.0.10, EAX20 before 1.0.0.48, EAX80 before 1.0.1.64, EX6120 before 1.0.0.64, EX6130 before 1.0.0.44, EX7500 before…
CVE-2021-45668, published 2021-12-26. Medium severity, CVSS 4.8. EPSS: 0.4% chance of exploitation in the next 30 days. Certain NETGEAR devices are affected by stored XSS. This affects EAX20 before 1.0.0.48, EAX80 before 1.0.1.64, EX3700 before 1.0.0.90, EX3800 before 1.0.0.90, EX6120 before 1.0.0.64, EX6130 before…
CVE-2021-45667, published 2021-12-26. Medium severity, CVSS 4.8. EPSS: 0.4% chance of exploitation in the next 30 days. Certain NETGEAR devices are affected by stored XSS. This affects CBR40 before 2.5.0.10, EAX20 before 1.0.0.48, EAX80 before 1.0.1.64, EX6120 before 1.0.0.64, EX6130 before 1.0.0.44, EX7500 before…
CVE-2021-45666, published 2021-12-26. Medium severity, CVSS 4.8. EPSS: 0.4% chance of exploitation in the next 30 days. Certain NETGEAR devices are affected by stored XSS. This affects CBR40 before 2.5.0.10, EAX80 before 1.0.1.64, EX3700 before 1.0.0.90, EX3800 before 1.0.0.90, EX6120 before 1.0.0.64, EX6130 before…
CVE-2021-45665, published 2021-12-26. Medium severity, CVSS 4.8. EPSS: 0.4% chance of exploitation in the next 30 days. Certain NETGEAR devices are affected by stored XSS. This affects EAX20 before 1.0.0.36, EAX80 before 1.0.1.62, EX3700 before 1.0.0.90, EX3800 before 1.0.0.90, EX6120 before 1.0.0.64, EX6130 before…
CVE-2021-45641, published 2021-12-26. High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days. Certain NETGEAR devices are affected by incorrect configuration of security settings. This affects D3600 before 1.0.0.72, D6000 before 1.0.0.72, D6200 before 1.1.00.34, D6220 before 1.0.0.52, D6400…