VulnerabilityPublished 3 Jun 2025

CVE-2025-5507: TOTOLINK A3002RU · Cross-site Scripting

Affects TOTOLINK A3002RUSource CVE Database V5

Not known to be exploited · CVSS 4.8 Medium.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 4.0 base score

4.8Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 29% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: High
User Interaction: Passive
Vulnerable system confidentiality: None
Vulnerable system integrity: Low
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: High: The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable system allowing full access to the vulnerable system’s settings and files.
User Interaction: Passive: Successful exploitation of this vulnerability requires limited interaction by the targeted user with the vulnerable system and the attacker’s payload. These interactions would be considered involuntary and do not require that the user actively subvert protections built into the vulnerable system.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 3 Jun 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
TOTOLINK A3002RU	Affected =2.1.1-B20230720.1011	Fixed in–

AI-suggested

Immediately restrict access to the router's management interface to trusted IP addresses or VPN connections to reduce exposure.
Implement strict network segmentation to isolate management interfaces from general user networks.
Educate users and administrators about the risks of clicking on suspicious links or interacting with untrusted content related to router management.
Monitor network traffic and logs for unusual activity or attempts to exploit the MAC Filtering page.
If possible, disable the MAC Filtering feature or the affected web interface component until a vendor patch is available.
Regularly check for vendor updates or community patches addressing this vulnerability.
Consider replacing affected devices with models from vendors with active security support if the risk is unacceptable.
Employ web application firewalls (WAF) or intrusion detection/prevention systems (IDS/IPS) to detect and block XSS attack patterns targeting the router's interface.

Description

A vulnerability was found in TOTOLINK A3002RU 2.1.1-B20230720.1011. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component MAC Filtering Page. The manipulation of the argument Comment leads to cross site scripting. The attack can be launched 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.

Impact

For European organizations using TOTOLINK A3002RU routers, this vulnerability poses a risk primarily to the security of network administrators or users who access the router's management interface. Successful exploitation could lead to session hijacking, credential theft, or execution of malicious scripts that could pivot attacks into the internal network. While the direct impact on network infrastructure availability is low, the potential for lateral movement or data compromise exists if attackers leverage the XSS to gain further access. Organizations in sectors with stringent data protection requirements (e.g., finance, healthcare, government) may face compliance risks if such vulnerabilities are exploited. Additionally, since the exploit requires user interaction and possibly authentication, the risk is somewhat mitigated but still significant in environments where multiple users have access to router management interfaces. The lack of vendor response and patch availability increases exposure time, necessitating proactive mitigation.

Summary

CVE-2025-5507 is a cross-site scripting (XSS) vulnerability identified in the TOTOLINK A3002RU router, specifically in version 2.1.1-B20230720.1011. The vulnerability resides in the MAC Filtering page of the router's web interface, where the 'Comment' parameter can be manipulated by an attacker to inject malicious scripts. This flaw allows an attacker to execute arbitrary JavaScript code in the context of the victim's browser when they access the affected page. The vulnerability is remotely exploitable without requiring authentication, although the CVSS vector indicates a requirement for high privileges (PR:H) and user interaction (UI:P), suggesting that exploitation may require an authenticated user to interact with a crafted link or page. The vendor has been contacted but has not responded or provided a patch, and the exploit details have been publicly disclosed, increasing the risk of exploitation. The CVSS score of 4.8 (medium severity) reflects the moderate impact of this vulnerability, with limited confidentiality impact but potential for session hijacking, phishing, or other client-side attacks. The vulnerability does not affect the router's core functionality or availability but compromises the integrity of the web interface and the security of users interacting with it.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 11 Jul 2025, 06:33 UTC

Technical details

References

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