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Vulnerability record · CVE-2021-45603 · published 26 December 2021

CVE-2021-45603: Netgear d7800 firmware information exposure vulnerability

Netgear · D7800 Firmware

Certain NETGEAR devices are affected by disclosure of sensitive information. A UPnP request reveals a device's serial number, which can be used for a password reset. This affects D7800 before 1.0.1.66, EX2700 before 1.0.1.68, WN3000RPv2 before 1.0.0.90, WN3000RPv3 before 1.0.2.100, LBR1020 before 2.6.5.20, LBR20 before 2.6.5.32, R6700AX before 1.0.10.110, R7800 before 1.0.2.86, R8900 before 1.0.5.38, R9000 before 1.0.5.38, RAX10 before 1.0.10.110, RAX120v1 before 1.2.3.28, RAX120v2 before 1.2.3.28, RAX70 before 1.0.10.110, RAX78 before 1.0.10.110, XR450 before 2.3.2.130, XR500 before 2.3.2.130, and XR700 before 1.0.1.46.

5.5 CVSS 3.1 Medium EPSS 0.58% · top 54.3% CWE-200 · Information exposure
5.5CVSS 3.1 base score, v2 2.1
0.58%EPSS exploitation probability, 30 days
NoNot in CISA KEV
18Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Certain NETGEAR devices are affected by disclosure of sensitive information. A UPnP request reveals a device's serial number, which can be used for a password reset. This affects D7800 before 1.0.1.66, EX2700 before 1.0.1.68, WN3000RPv2 before 1.0.0.90, WN3000RPv3 before 1.0.2.100, LBR1020 before 2.6.5.20, LBR20 before 2.6.5.32, R6700AX before 1.0.10.110, R7800 before 1.0.2.86, R8900 before 1.0.5.38, R9000 before 1.0.5.38, RAX10 before 1.0.10.110, RAX120v1 before 1.2.3.28, RAX120v2 before 1.2.3.28, RAX70 before 1.0.10.110, RAX78 before 1.0.10.110, XR450 before 2.3.2.130, XR500 before 2.3.2.130, and XR700 before 1.0.1.46.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

18 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://immersivelabs.com/resources/blog/netgear-vulnerabilities-could-put-small-business-routers-at-risk/ Third Party Advisory
https://kb.netgear.com/000064407/Security-Advisory-for-Post-Authentication-Command-Injection-Sensitive-Information-Discl PatchVendor Advisory
https://immersivelabs.com/resources/blog/netgear-vulnerabilities-could-put-small-business-routers-at-risk/ Third Party Advisory
https://kb.netgear.com/000064407/Security-Advisory-for-Post-Authentication-Command-Injection-Sensitive-Information-Discl PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-45603), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.