VulnerabilityPublished 16 Dec 2025

CVE-2025-14746: Ningyuanda TC155 · Improper Authentication

Affects Ningyuanda TC155Source CVE Database V5

Public exploit available · CVSS 5.3 Medium.

Data as of 26 Oct 2026, 13:47 UTC

CVSS 4.0 base score

5.3Medium

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

EPSS: 0.8% chance of exploitation in 30 days – higher than 58% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Base metrics

Attack Vector: Adjacent
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
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

Threat metrics

Exploit Maturity: POC

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

Attack Vector: Adjacent: The vulnerable system is bound to a protocol stack, but the attack is limited at the protocol level to a logically adjacent topology. This can mean an attack must be launched from the same shared proximity (e.g., Bluetooth, NFC, or IEEE 802.11) or logical network (e.g., local IP subnet), or from within a secure or otherwise limited administrative domain (e.g., MPLS, secure VPN within an administrative network zone).
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: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
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.
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 16 Dec 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
GitHubningyuanda/tc155`pkg:github/ningyuanda/tc155`Other threats	Affected =57.0.2.0	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Implement strict network segmentation to isolate Ningyuanda TC155 devices from general user networks, limiting local network access to trusted personnel only.
Enforce strong internal access controls and authentication mechanisms on network segments hosting these devices to prevent unauthorized lateral movement.
Monitor internal network traffic for unusual RTSP connection attempts or unauthorized access patterns to detect potential exploitation attempts.
Disable or restrict RTSP streaming services if not required or replace with more secure alternatives supporting robust authentication.
Engage with Ningyuanda or authorized vendors to request patches or firmware updates addressing the vulnerability.
If possible, deploy host-based intrusion detection systems on devices or network gateways to identify exploitation attempts.
Conduct regular security audits and penetration testing focusing on internal network vulnerabilities and device configurations.
Educate internal staff about the risks of local network attacks and enforce strict policies on device access and network usage.
Maintain up-to-date asset inventories to quickly identify affected devices and prioritize remediation efforts.
Consider deploying network access control (NAC) solutions to enforce device authentication and limit network access to authorized endpoints only.

Description

A vulnerability has been found in Ningyuanda TC155 57.0.2.0. The affected element is an unknown function of the component RTSP Live Video Stream Endpoint. Such manipulation leads to improper authentication. The attack must be carried out from within the local network. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

For European organizations, this vulnerability poses a moderate risk primarily to confidentiality, as unauthorized actors on the local network could access live video streams from Ningyuanda TC155 devices. This could lead to exposure of sensitive surveillance footage, undermining physical security and privacy compliance obligations such as GDPR. Critical infrastructure sectors (e.g., transportation, energy, government facilities) that deploy these devices for monitoring could face espionage or sabotage risks if attackers gain unauthorized video access. The vulnerability does not directly affect system integrity or availability, but unauthorized access could facilitate further internal attacks or reconnaissance. Since exploitation requires local network access, organizations with segmented networks and strict internal access controls may reduce risk, but those with flat or poorly segmented networks are more vulnerable. The absence of vendor patches and the public disclosure of exploit details increase the urgency for European entities to implement compensating controls. Failure to address this vulnerability could result in regulatory penalties, reputational damage, and operational security risks.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 23 Dec 2025, 04:47 UTC

Technical details

References

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