CVE-2017-6862
CriticalExploitedPublic exploitNETGEAR WNR2000v3 devices before 1.1.2.14, WNR2000v4 devices before 1.0.0.66, and WNR2000v5 devices before 1.0.0.42 allow authentication bypass and remote code execution via a buffer overflow that uses a parameter in the administration webapp.
Published May 26, 2017 · Updated Apr 21, 2026
Key Facts
Patch immediately- CVE-2017-6862 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Wnr2000 Firmware (Netgear), NETGEAR All versions prior to WNR2000v3 1.1.2.14, WNR2000v4 1.0.0.66, WNR2000v5 1.0.0.42.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jun 7, 2022. Public exploit code is available.
- EPSS estimates a 46% probability of exploitation in the next 30 days.
- Fixed versions are available, including Wnr2000 Firmware 1.0.0.42.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
46%
Higher than 98.7% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
NETGEAR WNR2000v3 devices before 1.1.2.14, WNR2000v4 devices before 1.0.0.66, and WNR2000v5 devices before 1.0.0.42 allow authentication bypass and remote code execution via a buffer overflow that uses a parameter in the administration webapp. The NETGEAR ID is PSV-2016-0261.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Jun 8, 2022 | Jun 22, 2022 | Not reported |
| Industry KEV feed | Jun 7, 2022 | Jun 22, 2022 | Not reported |
| CIRCL KEV | Jun 8, 2022 | Jun 22, 2022 | Not reported |
| ENISA EUVD | Jun 8, 2022 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Wnr2000 FirmwareNetgear | See advisory | 1.0.0.42 |
| NETGEAR All versions prior to WNR2000v3 1.1.2.14, WNR2000v4 1.0.0.66, WNR2000v5 1.0.0.42 | >= NETGEAR All versions prior to WNR2000v3 1.1.2.14, WNR2000v4 1.0.0.66, WNR2000v5 1.0.0.42 | n/a |
Patched Releases
Wnr2000 Firmware
1.0.0.42
Timeline
Publicly disclosed
May 26, 2017
Added to Industry KEV feed
Jun 7, 2022
Added to CISA KEV
Jun 8, 2022
Added to CIRCL KEV
Jun 8, 2022
Added to ENISA EUVD
Jun 8, 2022
Last updated
Apr 21, 2026
Weakness Type
- CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
References
- advisoryhttps://kb.netgear.com/000038542/Security-Advisory-for-Unauthenticated-Remote-Code-Execution-on-Some-Routers-PSV-2016-0261
- advisory98740
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
NETGEAR WNR2000v3 devices before 1.1.2.14, WNR2000v4 devices before 1.0.0.66, and WNR2000v5 devices before 1.0.0.42 allow authentication bypass and remote code execution via a buffer overflow that uses a parameter in the administration webapp.
Affected: Wnr2000 Firmware (Netgear); NETGEAR All versions prior to WNR2000v3 1.1.2.14, WNR2000v4 1.0.0.66, WNR2000v5 1.0.0.42 versions >= NETGEAR All versions prior to WNR2000v3 1.1.2.14, WNR2000v4 1.0.0.66, WNR2000v5 1.0.0.42. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jun 7, 2022.
Yes. It was added on Jun 8, 2022 with a federal remediation due date of Jun 22, 2022.
Public exploit code is available.
Fixed versions are available, including Wnr2000 Firmware 1.0.0.42.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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