VulnerabilityPublished 5 Oct 2025Updated 24 Feb 2026

CVE-2025-11298: Belkin F9K1015 · Command Injection

Affects Belkin F9K1015Source CVE Database V5

Public exploit available · CVSS 5.3 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 4.0 base score

5.3Medium

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

EPSS: 6.7% chance of exploitation in 30 days – higher than 93% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Base metrics

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

Threat metrics

Exploit Maturity: POC

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: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system 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 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: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to 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.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 5 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: evidence found.
CVSS exploit maturity: proof of concept public
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), CVSS vector, 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
Belkin F9K1015	Affected =1.00.10	Fixed in–

AI-suggested

Immediately isolate affected Belkin F9K1015 routers from untrusted networks, especially the internet, to prevent remote exploitation.
Disable remote management interfaces and any WAN-facing services that expose the /goform/formSetWanStatic endpoint.
Implement strict firewall rules to restrict access to router management interfaces to trusted internal IP addresses only.
Monitor network traffic for unusual or suspicious requests targeting the vulnerable endpoint or abnormal command execution patterns.
Replace affected devices with routers from vendors with active security support if patches remain unavailable.
If replacement is not immediately feasible, consider deploying network segmentation to limit potential lateral movement from compromised routers.
Regularly check for vendor updates or community patches and apply them promptly once available.
Educate network administrators about this vulnerability and encourage vigilance for signs of compromise.

Description

A vulnerability was determined in Belkin F9K1015 1.00.10. Impacted is an unknown function of the file /goform/formSetWanStatic. Executing a manipulation of the argument m_wan_ipaddr can lead to command injection. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

The vulnerability allows remote attackers to execute arbitrary commands on affected Belkin F9K1015 routers, potentially leading to full compromise of the device. This can result in unauthorized access to internal networks, interception or manipulation of network traffic, disruption of network services, and use of the compromised router as a foothold for further attacks. Organizations relying on these routers for WAN connectivity or network perimeter defense may face data breaches, service outages, and lateral movement by attackers. The absence of authentication requirements and user interaction lowers the barrier for exploitation, increasing the threat to both home users and enterprise environments using this hardware. The impact extends to confidentiality, integrity, and availability of network communications and connected systems.

Summary

CVE-2025-11298 identifies a command injection vulnerability in the Belkin F9K1015 router firmware version 1.00.10. The vulnerability resides in an unspecified function handling the /goform/formSetWanStatic endpoint, specifically via the m_wan_ipaddr parameter. An attacker can remotely send crafted requests to this endpoint to inject and execute arbitrary system commands on the device. The attack vector requires no authentication or user interaction, making it remotely exploitable over the network. The vulnerability impacts the device's confidentiality, integrity, and availability by allowing full command execution, potentially enabling attackers to control the router, intercept or manipulate network traffic, or pivot into internal networks. The CVSS 4.0 score is 5.3 (medium), reflecting the ease of exploitation but limited scope or impact compared to more critical vulnerabilities. The vendor was notified but has not issued any patches or advisories, and no known exploits have been observed in the wild yet. The public disclosure of exploit details increases the risk of exploitation by threat actors. The lack of patch availability necessitates immediate defensive actions to mitigate risk.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 24 Feb 2026, 21:48 UTC

Technical details

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