CVEs / CVE-2017-5521
CVE-2017-5521: NETGEAR Multiple Devices Exposure of Sensitive Information Vulnerability
- Known exploited in the CISA KEV catalog since 8 Sep 2022
- high 8.1 CVSS 3.1 (NVD)
- EPSS 89.3% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Multiple NETGEAR devices are prone to admin password disclosure via simple crafted requests to the web management server.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| n/a n/a | n/a | — |
Exploitation
| In CISA KEV since | 8 Sep 2022 |
|---|---|
| Due date for US federal agencies | 29 Sep 2022 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 3.1 | 8.1 highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|
References
- CVE-2017-5521 on NVD
- CVE-2017-5521 in the CISA KEV catalog
- https://kb.netgear.com/30632/Web-GUI-Password-Recovery-and-Exposure-Security-Vulnerability (cited by CISA)
- http://kb.netgear.com/30632/Web-GUI-Password-Recovery-and-Exposure-Security-Vulnerability Vendor Advisory
- http://www.securityfocus.com/bid/95457 Broken Link, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/41205/ Exploit, Third Party Advisory, VDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-5521 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.