CVE-2017-5521
8.1, high Known exploitedNETGEAR Multiple Devices Exposure of Sensitive Information Vulnerability
- CVSS
- 8.1, high high CVSS v3.1
- EPSS, next 30 days
- 89% higher than 99.7% of scored CVEs
- Exploitation
- Confirmed in the wild
- Published
- 17 Jan 20179 years ago
Known exploited
CISA added this to the Known Exploited Vulnerabilities Catalog on 8 Sept 2022. US federal agencies had to remediate by 29 Sept 2022, a deadline that has passed.
Required action. Apply updates per vendor instructions. If the affected device has since entered end-of-life, it should be disconnected if still in use.
Description
An issue was discovered on NETGEAR R8500, R8300, R7000, R6400, R7300, R7100LG, R6300v2, WNDR3400v3, WNR3500Lv2, R6250, R6700, R6900, and R8000 devices. They are prone to password disclosure via simple crafted requests to the web management server. The bug is exploitable remotely if the remote management option is set, and can also be exploited given access to the router over LAN or WLAN. When trying to access the web panel, a user is asked to authenticate; if the authentication is canceled and password recovery is not enabled, the user is redirected to a page that exposes a password recovery token. If a user supplies the correct token to the page /passwordrecovered.cgi?id=TOKEN (and password recovery is not enabled), they will receive the admin password for the router. If password recovery is set the exploit will fail, as it will ask the user for the recovery questions that were previously set when enabling that feature. This is persistent (even after disabling the recovery option, the exploit will fail) because the router will ask for the security questions.
Details
- Vendor
- NETGEAR
- Product
- R6200 Firmware
- Weakness
- n/a
- Status
- Analyzed
- Updated
- 17 Jun 2026
- Assigner
- cve@mitre.org
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References 4
Exploit code 1
Advisories 2
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
Other NETGEAR CVEs
Every NETGEAR CVE we holdSame vendor in what we hold, not a known link between the flaws.
- CVE-2020-26919 Netgear JGS516PE Devices Missing Function Level Access Control Vulnerability KEV EPSS 57% 9.8, critical
- CVE-2017-6862 NETGEAR Multiple Devices Buffer Overflow Vulnerability KEV EPSS 46% 9.8, critical
- CVE-2016-1555 NETGEAR Multiple WAP Devices Command Injection Vulnerability KEV EPSS 98% 9.8, critical
- CVE-2017-6334 NETGEAR DGN2200 Devices OS Command Injection Vulnerability KEV EPSS 73% 8.8, high
- CVE-2017-6077 NETGEAR DGN2200 Remote Code Execution Vulnerability KEV EPSS 69% 9.8, critical
- CVE-2016-10174 NETGEAR WNR2000v5 Router Buffer Overflow Vulnerability KEV EPSS 83% 9.8, critical
- CVE-2016-6277 NETGEAR Multiple Routers Remote Code Execution Vulnerability KEV EPSS 100% 8.8, high
Beyond this page
Is CVE-2017-5521 in your network?
This page tells you how dangerous CVE-2017-5521 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.
CVE-2017-5521 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.
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EXYS7600 OCELOT
Find it before attackers do
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EXYS7950 KONDRA
Detect it if it's exploited
Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.
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Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.