CVE-2025-5516VulnerabilityPublished 3 Jun 2025

CVE-2025-5516: TOTOLINK X2000R · Cross Site Scripting

Affects TOTOLINK X2000RSource CVE Database V5

Not known to be exploited · CVSS 4.8 Medium.

Data as of 26 Oct 2026, 06:26 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 28% 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 2026-10-26.

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 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
GitHubtotolink/x2000r`pkg:github/totolink/x2000r`Other threats	Affected =1.0.0-B20230726.1108	Fixed in–

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AI-suggested

Given the absence of an official patch, European organizations should take immediate steps to mitigate risk. First, restrict access to the router's web management interface by limiting it to trusted internal IP addresses and disabling remote management over the internet. Implement network segmentation to isolate the router management interface from general user networks. Employ strong authentication mechanisms and change default credentials to prevent unauthorized access. Monitor network traffic and logs for suspicious activity related to the router. If possible, replace or upgrade affected devices to models with confirmed security updates. Educate users about the risks of interacting with suspicious links or content that could trigger XSS attacks. Additionally, consider deploying web application firewalls (WAFs) or intrusion prevention systems (IPS) that can detect and block XSS payloads targeting the router's interface. Regularly review vendor communications for any updates or patches and apply them promptly once available.

Description

A vulnerability, which was classified as problematic, was found in TOTOLINK X2000R 1.0.0-B20230726.1108. This affects an unknown part of the file /boafrm/formFilter of the component URL Filtering Page. The manipulation of the argument URL Address leads to cross site scripting. It is possible to initiate the attack 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, this vulnerability poses a moderate risk primarily to network infrastructure security. Exploitation could allow attackers to compromise the router's management interface, leading to unauthorized changes in network filtering rules or redirection of traffic. This could result in data interception, loss of confidentiality, or disruption of network services. Organizations relying on TOTOLINK X2000R routers, especially in small to medium-sized enterprises or branch offices where such consumer-grade devices are more common, may be particularly vulnerable. The public disclosure of the exploit increases the likelihood of opportunistic attacks. Additionally, if the router's management interface is exposed to the internet or accessible by multiple users, the risk escalates. The attack requires user interaction, which may limit large-scale automated exploitation but does not eliminate targeted attacks. Overall, the vulnerability could undermine network security posture and trust in internal communications within affected organizations.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 11 Jul 2025, 06:16 UTC

Technical details

References

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