How severe is CVE-2021-45671?

CVE-2021-45671 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity high, and availability low.

Is CVE-2021-45671 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45671?

CVE-2021-45671 primarily affects Netgear Rax200 Firmware. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-45671?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-45671 published?

CVE-2021-45671 was published on 2021-12-26 and last updated on 2026-06-17.

CVE-2021-45671

CVE-2021-45671 is a medium-severity vulnerability in Netgear Rax200 Firmware with a CVSS 3.x base score of 6.5. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 3.5
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Netgear Rax200 Firmware
Published: 2021-12-26
Last modified: 2026-06-17

Description

Certain NETGEAR devices are affected by stored XSS. This affects CBR40 before 2.5.0.10, EAX80 before 1.0.1.62, EX7500 before 1.0.0.72, R7900 before 1.0.4.38, R8000 before 1.0.4.68, RAX200 before 1.0.4.120, RBS40V before 2.6.1.4, RBW30 before 2.6.1.4, MR60 before 1.0.6.110, RAX20 before 1.0.2.82, RAX45 before 1.0.2.72, RAX80 before 1.0.4.120, MS60 before 1.0.6.110, RAX15 before 1.0.2.82, RAX50 before 1.0.2.72, RAX75 before 1.0.4.120, RBR750 before 3.2.16.6, RBR850 before 3.2.16.6, RBS750 before 3.2.16.6, RBS850 before 3.2.16.6, RBK752 before 3.2.16.6, and RBK852 before 3.2.16.6.

Frequently asked questions

What is CVE-2021-45671?: Certain NETGEAR devices are affected by stored XSS. This affects CBR40 before 2.5.0.10, EAX80 before 1.0.1.62, EX7500 before 1.0.0.72, R7900 before 1.0.4.38, R8000 before 1.0.4.68, RAX200 before 1.0.4.120, RBS40V before 2.6.1.4, RBW30 before 2.6.1.4, MR60 before 1.0.6.110, RAX20 before 1.0.2.82, RAX45 before 1.0.2.72, RAX80 before 1.0.4.120, MS60 before 1.0.6.110, RAX15 before 1.0.2.82, RAX50 before 1.0.2.72, RAX75 before 1.0.4.120, RBR750 before 3.2.16.6, RBR850 before 3.2.16.6, RBS750 before 3.2.16.6, RBS850 before 3.2.16.6, RBK752 before 3.2.16.6, and RBK852 before 3.2.16.6.
How severe is CVE-2021-45671?: CVE-2021-45671 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity high, and availability low.
Is CVE-2021-45671 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45671?: CVE-2021-45671 primarily affects Netgear Rax200 Firmware. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-45671?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-45671 published?: CVE-2021-45671 was published on 2021-12-26 and last updated on 2026-06-17.

References

https://kb.netgear.com/000064482/Security-Advisory-for-Stored-Cross-Site-Scripting-on-Some-Routers-Extenders-and-WiFi-Systems-PSV-2020-0261

Affected products (22)

cpe:2.3:o:netgear:rax200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:mr60_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rax20_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rax45_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rax80_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:ms60_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rax15_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rax50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rax75_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbr750_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbr850_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbs750_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbs850_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbk752_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbk852_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:cbr40_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:eax80_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:ex7500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7900_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r8000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbs40v_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbw30_firmware:*:*:*:*:*:*:*:*

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