CVE-2020-25498Public exploitNetwork attack vector

Stored script execution via unfiltered router settings

Published Jan 6, 2021 · Updated Jul 9, 2026

Stored cross-site scripting in the Beetel 777VR1 router allows remote authenticated users to execute script in an administrator's browser. The form2ntp.cgi endpoint stores unvalidated ntpserver values; the URL Filter likewise stores an unfiltered Keyword that later renders as active script. Administrative access is required to write the settings, and a user must open the affected page; script execution then acts within that browser session.

CVSS severity4.8
Medium
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in the Beetel 777VR1 router allows remote authenticated users to execute script in an administrator's browser. The form2ntp.cgi endpoint stores unvalidated ntpserver values; the URL Filter likewise stores an unfiltered Keyword that later renders as active script. Administrative access is required to write the settings, and a user must open the affected page; script execution then acts within that browser session.

The record

CVE
CVE-2020-25498
Published
Jan 6, 2021
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 6, 2021CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record 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

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/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')

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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