Belkin LINKSYS RE6500 devices before 1.0.012.001 allow remote attackers to execute arbitrary commands or set a new password via shell metac…

published 2020-12-26 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-23370

cvss: 9.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 32.9%; EPSS 32.9% chance of exploitation in 30 days, percentile 98%
public exploits: 0; none known, plus a Nuclei check

Belkin LINKSYS RE6500 devices before 1.0.012.001 allow remote attackers to execute arbitrary commands or set a new password via shell metacharacters to the goform/setSysAdm page.

Patch / fix

fixed in 1

linksys re6500_firmware 1.0.012.001

Exploit prediction

32.94% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Nuclei template Belkin Linksys RE6500 <1.0.012.001 - Remote Command Execution nuclei detection template
resolverblog.blogspot.com https://resolverblog.blogspot.com/2020/07/linksys-re6500-unauthenticated-rce-full.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	10.0	AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

resolverblog.blogspot.com /2020/07/linksys-re6500-unauthenticated-rce-full.html
exploit, third-party-advisory
downloads.linksys.com /support/assets/releasenotes/ExternalReleaseNotes_RE6500_1.0.012.001.txt
release-notes, vendor-advisory
bugcrowd.com /disclosures/72d7246b-f77f-4f7f-9bd1-fdc35663cc92/linksys-re6500-unauthenticated-rce-working-across-multiple-f
third-party-advisory

Sources

CVE List CVE-2020-35713
NVD CVE-2020-35713

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary