CVE-2020-35228Public exploitNetwork attack vector

Stored script execution via unencoded language setting

Published Mar 10, 2021 · Updated Aug 4, 2024

Stored XSS in NETGEAR JGS516PE 2.6.0.43 and GS116Ev2 2.6.0.43 allows remote attackers to run script in the administration panel. The multiLanguageCfg handler stores the unvalidated selectLang value and renders it without encoding on every control-panel page. Plus Utility support must be enabled, and the related CSRF weakness lets an external attacker induce an administrator to store script that issues administrative requests or exfiltrates panel data.

CVSS severity4.8
Medium
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in NETGEAR JGS516PE 2.6.0.43 and GS116Ev2 2.6.0.43 allows remote attackers to run script in the administration panel. The multiLanguageCfg handler stores the unvalidated selectLang value and renders it without encoding on every control-panel page. Plus Utility support must be enabled, and the related CSRF weakness lets an external attacker induce an administrator to store script that issues administrative requests or exfiltrates panel data.

The record

CVE
CVE-2020-35228
Published
Mar 10, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 10, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
7.2NCC GroupCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
3.5NVDAV:N/AC:M/Au:S/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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