CVE-2025-6299VulnerabilityPublished 20 Jun 2025

CVE-2025-6299: TOTOLINK N150RT · OS Command Injection

Affects TOTOLINK N150RTSource CVE Database V5

Not known to be exploited · 11% EPSS · CVSS 5.1 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 4.0 base score

5.1Medium

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

EPSS: 11.6% chance of exploitation in 30 days – higher than 96% 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: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: High
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: 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: 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 20 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
TOTOLINK N150RT	Affected =3.4.0-B20190525	Fixed in–

AI-suggested

1. Immediate mitigation should focus on restricting access to the router's management interface. Disable remote management if enabled, or restrict it to trusted IP addresses only. 2. Change default credentials and ensure strong, unique passwords are used for device administration to prevent unauthorized privilege escalation. 3. Network segmentation should be implemented to isolate vulnerable devices from critical network segments, limiting the impact of potential compromise. 4. Monitor network traffic for unusual activity originating from or targeting TOTOLINK N150RT devices, including unexpected command execution attempts or configuration changes. 5. Since no official patches are currently available, consider replacing vulnerable devices with models from vendors that provide timely security updates. 6. If replacement is not immediately feasible, apply firewall rules to limit access to the device's web interface to trusted internal networks only. 7. Educate users about the risks of enabling remote management and the importance of maintaining device firmware updates. 8. Regularly check for firmware updates from TOTOLINK and apply them promptly once available to remediate this vulnerability. 9. Employ network intrusion detection systems (NIDS) with signatures for command injection attempts targeting known vulnerable endpoints. 10. Conduct periodic security assessments of network devices to identify and remediate similar vulnerabilities proactively.

Description

A vulnerability classified as critical has been found in TOTOLINK N150RT 3.4.0-B20190525. This affects an unknown part of the file /boa/formWSC. The manipulation of the argument targetAPSsid leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Impact

For European organizations, the impact of CVE-2025-6299 depends largely on the deployment of TOTOLINK N150RT routers within their networks. Given that TOTOLINK devices are generally targeted at home and small office users, large enterprises may have limited exposure unless these devices are used in branch offices or by remote workers. If exploited, attackers with elevated privileges could execute arbitrary commands on the router, potentially leading to unauthorized network access, interception or manipulation of network traffic, and disruption of network connectivity. This could compromise confidentiality and integrity of data traversing the network and availability of network services. The medium CVSS score and low impact on confidentiality, integrity, and availability suggest that while the vulnerability is serious, it is not likely to cause widespread catastrophic damage. However, in critical infrastructure or sensitive environments where these routers are used, exploitation could facilitate lateral movement or serve as a foothold for further attacks. The lack of public exploits reduces immediate risk, but the public disclosure increases the likelihood of future exploitation attempts. European organizations with remote management enabled on these devices face higher risk due to potential remote exploitation. Overall, the threat is more significant for small businesses, home offices, and remote workers using TOTOLINK N150RT routers without proper network segmentation or security controls.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 20 Jun 2025, 02:47 UTC

Technical details

References

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