What is CVE-2017-6862?

CVE-2017-6862 is a critical-severity vulnerability in NETGEAR Wnr2000, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2017-05-26.

How severe is CVE-2017-6862?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2017-6862 known to be exploited?

Yes. CVE-2017-6862 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-06-08), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.

Buffer overflow in NETGEAR Wnr2000

CVE-2017-6862

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.

Vulnerability class: Buffer Overflow

Published 2017-05-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.457 (98.8th percentile), scored 2026-10-17.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.433 · newest: 0.457 · change: +0.024

Affected products

NETGEAR Wnr2000 — versions v5, v4, v3
NETGEAR Wnr2000 Firmware
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

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-06-08. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-06-22.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

a2826606-91e7-4eb6-899e-8484bd4575d5 (Vendor Advisory)
a2826606-91e7-4eb6-899e-8484bd4575d5 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
a2826606-91e7-4eb6-899e-8484bd4575d5 (Broken Link)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2017-6862?: CVE-2017-6862 is a critical-severity vulnerability in NETGEAR Wnr2000, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2017-05-26.
How severe is CVE-2017-6862?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2017-6862 known to be exploited?: Yes. CVE-2017-6862 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-06-08), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.