How severe is CVE-2021-45499?

CVE-2021-45499 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-45499 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45499?

CVE-2021-45499 primarily affects Netgear R6900p Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-45499?

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-2021-45499 published?

CVE-2021-45499 was published on 2021-12-26 and last updated on 2026-06-17.

CVE-2021-45499

CVE-2021-45499 is a high-severity vulnerability in Netgear R6900p Firmware with a CVSS 3.x base score of 8.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.2)
CVSS v2: 6.5
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Netgear R6900p Firmware
Published: 2021-12-26
Last modified: 2026-06-17

Description

Certain NETGEAR devices are affected by authentication bypass. This affects R6900P before 1.3.3.140, R7000P before 1.3.3.140, R7900P before 1.4.2.84, R7960P before 1.4.2.84, R8000P before 1.4.2.84, RAX75 before 1.0.3.106, and RAX80 before 1.0.3.106.

Frequently asked questions

What is CVE-2021-45499?: Certain NETGEAR devices are affected by authentication bypass. This affects R6900P before 1.3.3.140, R7000P before 1.3.3.140, R7900P before 1.4.2.84, R7960P before 1.4.2.84, R8000P before 1.4.2.84, RAX75 before 1.0.3.106, and RAX80 before 1.0.3.106.
How severe is CVE-2021-45499?: CVE-2021-45499 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-45499 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45499?: CVE-2021-45499 primarily affects Netgear R6900p Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-45499?: 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-2021-45499 published?: CVE-2021-45499 was published on 2021-12-26 and last updated on 2026-06-17.

References

https://kb.netgear.com/000064445/Security-Advisory-for-Authentication-Bypass-on-Some-Routers-PSV-2019-0027

Affected products (7)

cpe:2.3:o:netgear:r6900p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7000p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7900p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7960p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r8000p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rax75_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rax80_firmware:*:*:*:*:*:*:*:*

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