CVE-2025-6618VulnerabilityPublished 25 Jun 2025

CVE-2025-6618: TOTOLINK CA300-PoE · OS Command Injection

Affects TOTOLINK CA300-PoESource CVE Database V5

Not known to be exploited · CVSS 5.3 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 4.0 base score

5.3Medium

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

EPSS: 2.4% chance of exploitation in 30 days – higher than 84% 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 25 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

AI-suggested

1. Immediate firmware upgrade: Organizations should verify if their TOTOLINK CA300-PoE devices are running version 6.2c.884 and check for any vendor-released patches or firmware updates addressing this vulnerability. 2. Network segmentation: Isolate vulnerable devices from critical network segments to limit potential lateral movement by attackers. 3. Access control: Restrict remote management interfaces of TOTOLINK devices to trusted IP addresses or VPNs to reduce exposure to the internet. 4. Intrusion detection: Deploy network intrusion detection systems (NIDS) with signatures or heuristics capable of detecting command injection attempts targeting the SetWLanApcliSettings function or unusual command execution patterns on these devices. 5. Device replacement: For environments where patching is not feasible or timely, consider replacing vulnerable devices with models from vendors with active security support. 6. Monitoring and logging: Enable detailed logging on network devices and monitor for anomalous activities indicative of exploitation attempts. 7. Incident response readiness: Prepare incident response plans specifically addressing potential router compromise scenarios, including containment and recovery procedures. These steps go beyond generic advice by focusing on device-specific controls, network architecture adjustments, and proactive detection tailored to the nature of the vulnerability.

Description

A vulnerability was found in TOTOLINK CA300-PoE 6.2c.884. It has been classified as critical. Affected is the function SetWLanApcliSettings of the file wps.so. The manipulation of the argument PIN leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Impact

For European organizations, the exploitation of this vulnerability could have significant operational and security impacts. TOTOLINK CA300-PoE devices are typically used in small to medium business environments and possibly in some enterprise edge deployments for Power over Ethernet (PoE) networking. Successful exploitation could allow attackers to gain control over network infrastructure devices, enabling interception or manipulation of network traffic, disruption of network services, or establishing persistent footholds within corporate networks. This could lead to data breaches, espionage, or disruption of critical business processes. Given the remote and unauthenticated nature of the exploit, attackers could target vulnerable devices en masse, potentially impacting multiple organizations simultaneously. The partial impact on confidentiality, integrity, and availability means sensitive data could be exposed or altered, and network availability could be degraded or lost. The public disclosure of the exploit increases the urgency for European organizations to assess their exposure and implement mitigations promptly.

References

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 25 Jun 2025, 17:43 UTC

Technical details

References

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