CVE-2025-5379VulnerabilityPublished 31 May 2025Updated 2 Jun 2025

CVE-2025-5379: NuCom NC-WR744G · Hard-coded Credentials

Affects NuCom NC-WR744GSource 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: 0.2% chance of exploitation in 30 days – higher than 20% 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:N/VA:N/SC:N/SI:N/SA:N

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: None
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: 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: None: There is no loss of integrity within 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 31 May 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

First, identify all instances of the NuCom NC-WR744G routers running the affected firmware version. Replace these devices with models from vendors with active security support where feasible. If replacement is not immediately possible, isolate the affected routers from direct internet exposure by placing them behind firewalls or VPNs restricting access to trusted management networks only. Change default network configurations to limit management interface exposure. Monitor network traffic for unusual access patterns or unauthorized login attempts targeting these devices. Employ network segmentation to reduce the impact of a compromised router. Consider deploying intrusion detection/prevention systems (IDS/IPS) to detect exploitation attempts. Maintain strict logging and audit trails for router access. Finally, engage with NuCom or authorized resellers to demand security updates or firmware patches and stay informed about any future advisories.

Description

A vulnerability classified as critical was found in NuCom NC-WR744G 8.5.5 Build 20200530.307. This vulnerability affects unknown code of the component Console Application. The manipulation of the argument CMCCAdmin/useradmin/CUAdmin leads to hard-coded credentials. The attack can be initiated remotely. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

For European organizations, exploitation of this vulnerability could have serious consequences. The NC-WR744G router is used in various small to medium enterprise and possibly some industrial environments. Unauthorized access to the router could allow attackers to intercept sensitive communications, redirect traffic to malicious sites, or establish persistent footholds within corporate networks. This could lead to data breaches, intellectual property theft, or disruption of business operations. Given the router's role in network connectivity, attackers could also launch further attacks against internal systems. The lack of vendor response and patch availability increases the risk exposure. Organizations relying on this device may face compliance issues with GDPR if personal data confidentiality is compromised. Additionally, critical infrastructure sectors using these routers could experience operational disruptions. The medium CVSS score may underestimate the real-world risk due to the nature of hard-coded credentials enabling easy unauthorized access.

References

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