CVE-2025-43877VulnerabilityPublished 24 Jun 2025Updated 25 Jun 2025

CVE-2025-43877: ELECOM WRC-1167GHBK2-S · Cross-site scripting (XSS)

Affects ELECOM WRC-1167GHBK2-SSource CVE Database V5

Not known to be exploited · CVSS 5.4 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.0 base score

5.4Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: Required
Scope: Changed
Confidentiality: Low
Integrity: Low
Availability: None

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

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, 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: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
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 on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 24 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 2026-10-25.

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
ELECOM CO.,LTD. WRC-1167GHBK2-S	Affected *	Fixed in–

AI-suggested

1. Restrict access to the router's WebGUI interface to trusted administrative networks only, using network segmentation and firewall rules to limit exposure. 2. Enforce strong authentication mechanisms and limit the number of users with administrative privileges to reduce the risk of exploitation. 3. Implement multi-factor authentication (MFA) for accessing the router's management interface if supported. 4. Monitor administrative access logs for unusual activity that could indicate attempted exploitation. 5. Educate administrators about the risks of interacting with untrusted content or links while logged into the router's WebGUI. 6. Where possible, disable or limit the use of the WebGUI interface and manage the router via more secure methods such as SSH or dedicated management tools. 7. Regularly check for firmware updates or security advisories from ELECOM and apply patches promptly once available. 8. Employ web application firewalls (WAF) or intrusion detection/prevention systems (IDS/IPS) that can detect and block XSS payloads targeting the router's management interface. 9. Conduct periodic security assessments of network devices to identify and remediate similar vulnerabilities proactively.

Description

WRC-1167GHBK2-S contains a stored cross-site scripting vulnerability in WebGUI. If exploited, an arbitrary script may be executed on the web browser of the user who accessed WebGUI of the product.

Impact

For European organizations, the impact of this vulnerability can be significant, particularly for those relying on ELECOM's WRC-1167GHBK2-S routers in their network infrastructure. Exploitation could allow attackers to execute arbitrary scripts within the administrative interface, potentially leading to unauthorized configuration changes, exposure of sensitive network information, or pivoting attacks within the internal network. This could compromise the confidentiality and integrity of network management operations and potentially facilitate further attacks such as lateral movement or data exfiltration. Organizations with remote or distributed management of network devices are especially at risk if administrative users access the WebGUI from less secure environments. The vulnerability's requirement for user interaction and privileges somewhat limits the attack surface but does not eliminate risk, especially in environments where multiple administrators or users have access to the router's interface. Additionally, the lack of patches increases the window of exposure. Given the router's role in managing network traffic, any compromise could disrupt business operations indirectly by undermining network security and trust.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 24 Jun 2025, 05:10 UTC

Technical details

References

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