CVE-2025-4852Public exploitNetwork attack vector

Authenticated script execution via unneutralized VPN comment

Published May 18, 2025 · Updated May 19, 2025

Cross-site scripting in the VPN page of TOTOLINK A3002R 2.1.1-B20230720.1011 allows remote authenticated users to run script via Comment. The VPN page processes the Comment value without neutralizing executable markup, so crafted input becomes page script. Exploitation requires high-privilege access to submit the value and user interaction to render it; the published impact is page-content modification only.

CVSS severity4.8
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in the VPN page of TOTOLINK A3002R 2.1.1-B20230720.1011 allows remote authenticated users to run script via Comment. The VPN page processes the Comment value without neutralizing executable markup, so crafted input becomes page script. Exploitation requires high-privilege access to submit the value and user interaction to render it; the published impact is page-content modification only.

The record

CVE
CVE-2025-4852
Published
May 18, 2025
Updated
May 19, 2025
Vendor
TOTOLINK
Product
A3002R
Classifications
CWE-79, CWE-94, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 19, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.1.1-B20230720.1011

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

TOTOLINK · A3002Rversion=2.1.1-B20230720.1011

Published CVSS scores

2.4VulDB CNACVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
2.4VulDB CNACVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
4.8VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
3.3VulDB CNAAV:N/AC:L/Au:M/C:N/I:P/A:N
3.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Cross Site Scripting
CWE-94Code Injection
T1059.007JavaScript/JScript

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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