No exploitation reportedFix available

CVE-2021-45499

Q: Is CVE-2021-45499 actively exploited?

Active exploitation of CVE-2021-45499 has not been confirmed. Its EPSS score was 1.0% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-45499?

CVE-2021-45499 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2021-12-26
Fixed in1.3.3.140

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2021-12-2601:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-45499?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-45499?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Netgear r6900p firmwareversion to verify

Branch	Affected	Fixed in	Source
1.3	< 1.3.3.140	1.3.3.140	NVD

Netgear r7000p firmwareversion to verify

Branch	Affected	Fixed in	Source
1.3	< 1.3.3.140	1.3.3.140	NVD

Netgear r7900p firmwareversion to verify

Branch	Affected	Fixed in	Source
1.4	< 1.4.2.84	1.4.2.84	NVD

4 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Netgear r6900p firmware to 1.3.3.140

Advisories and patches

kb.netgear.comPatch · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CNACVSS 3.18.2read 2026-10-23
NVDCVSS 3.18.8read 2026-10-23
NVDCVSS 2.06.5read 2026-10-23
FIRST EPSSEPSS score1.0 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2021-12-26
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-45499?

Is CVE-2021-45499 actively exploited?

Active exploitation of CVE-2021-45499 has not been confirmed. Its EPSS score was 1.0% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-45499?

CVE-2021-45499 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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