TOTOLINK A3002RU Virtual Server Page formPortFw cross site scripting

published 2025-06-03 17 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-16739

cvss: 2.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits: 0; none known

A vulnerability was found in TOTOLINK A3002RU 2.1.1-B20230720.1011 and classified as problematic. This issue affects some unknown processing of the file /boafrm/formPortFw of the component Virtual Server Page. The manipulation of the argument service_type leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: total
Assessed: 17 mo ago (2025-06-04)

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/fizz-is-on-the-way/Iot_vuls/tree/main/A3002RU_V2/XSS_virtual_server referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	4.8	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CNA	3.1	2.4	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
CNA	3.0	2.4	CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
CNA	2.0	3.3	AV:N/AC:L/Au:M/C:N/I:P/A:N
CNA	4.0	4.8	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

TOTOLINK A3002RU

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation
CWE-94 Improper Control of Generation of Code

References

github.com /fizz-is-on-the-way/Iot_vuls/tree/main/A3002RU_V2/XSS_virtual_server
exploit, third-party-advisory
vuldb.com /?id.310919
vdb-entry, technical-description, third-party-advisory
vuldb.com /?ctiid.310919
signature, permissions-required, vdb-entry
vuldb.com /?submit.584662
third-party-advisory, vdb-entry
totolink.net /
product

Sources

CVE List CVE-2025-5505
NVD CVE-2025-5505

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