CVE-2021-45595
CVE-2021-45595 is a high-severity vulnerability in Netgear Lbr20 Firmware with a CVSS 3.x base score of 7.6. 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-77.
Key facts
- Severity: High (CVSS 3.x base score 7.6)
- CVSS v2: 6.5
- EPSS exploit prediction: 2% (75th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-77
- Affected product: Netgear Lbr20 Firmware
- Published:
- Last modified:
Description
Certain NETGEAR devices are affected by command injection by an authenticated user. This affects LBR20 before 2.6.3.50, RBS50Y before 2.7.3.22, RBR10 before 2.7.3.22, RBR20 before 2.7.3.22, RBR40 before 2.7.3.22, RBR50 before 2.7.3.22, RBS10 before 2.7.3.22, RBS20 before 2.7.3.22, RBS40 before 2.7.3.22, RBS50 before 2.7.3.22, RBK12 before 2.7.3.22, RBK20 before 2.7.3.22, RBK40 before 2.7.3.22, and RBK50 before 2.7.3.22.
Frequently asked questions
- What is CVE-2021-45595?
- Certain NETGEAR devices are affected by command injection by an authenticated user. This affects LBR20 before 2.6.3.50, RBS50Y before 2.7.3.22, RBR10 before 2.7.3.22, RBR20 before 2.7.3.22, RBR40 before 2.7.3.22, RBR50 before 2.7.3.22, RBS10 before 2.7.3.22, RBS20 before 2.7.3.22, RBS40 before 2.7.3.22, RBS50 before 2.7.3.22, RBK12 before 2.7.3.22, RBK20 before 2.7.3.22, RBK40 before 2.7.3.22, and RBK50 before 2.7.3.22.
- How severe is CVE-2021-45595?
- CVE-2021-45595 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-45595 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-45595?
- CVE-2021-45595 primarily affects Netgear Lbr20 Firmware. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-45595?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-45595 published?
- CVE-2021-45595 was published on 2021-12-26 and last updated on 2026-06-17.
References
Affected products (14)
- cpe:2.3:o:netgear:lbr20_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rbs50y_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rbr10_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rbr20_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rbr40_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rbr50_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rbs10_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rbs20_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rbs40_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rbs50_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rbk12_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rbk20_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rbk40_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:rbk50_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Netgear Lbr20 Firmware
- CVE-2021-45619 — Critical (CVSS 9.6): Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects EX6200v2 before…
- CVE-2021-45618 — Critical (CVSS 9.6): Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects D7800 before…
- CVE-2021-34947 — High (CVSS 8.8): NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows…
- CVE-2022-27646 — High (CVSS 8.8): This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR…
- CVE-2022-27644 — High (CVSS 8.8): This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected…
- CVE-2021-27253 — High (CVSS 8.8): This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR…
All CVEs affecting Netgear Lbr20 Firmware →
Other CWE-77 (Command Injection) vulnerabilities
- CVE-2026-105484 — Critical (CVSS 10.0): A security vulnerability has been detected in TOTOLINK X6000R 9.4.0cu.652_B20230116. The impacted element is the…
- CVE-2026-105134 — Critical (CVSS 10.0): A flaw has been found in Ahsay AhsayCBS up to 10.3.2. This vulnerability affects unknown code of the file…
- CVE-2026-102240 — Critical (CVSS 10.0): A vulnerability was found in Netcore NAP930 0.1.241010.141410. This affects the function eval of the file…
- CVE-2026-101076 — Critical (CVSS 10.0): A vulnerability was detected in Netcore NR289-GE 1.4.5102. This affects the function system of the file…
- CVE-2026-101075 — Critical (CVSS 10.0): A security vulnerability has been detected in Netcore NR289-GE 1.4.5102. The impacted element is the function system of…
- CVE-2026-101072 — Critical (CVSS 10.0): A vulnerability was identified in Netcore NR289-GE 1.4.5102. This issue affects the function system of the file…