VulnerabilityPublished 7 Jan 2026

CVE-2025-14631: TP-Link Systems Archer BE400 · NULL Pointer Dereference

Affects TP-Link Systems Archer BE400Source CVE Database V5

Not known to be exploited · CVSS 7.1 High.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 4.0 base score

7.1High

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 14% 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:N/VI:N/VA:H/SC:N/SI:N/SA:N

Attack Vector: Adjacent
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable system confidentiality: None
Vulnerable system integrity: None
Vulnerable system availability: High
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: 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: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: High: There is a total loss of availability, resulting in the attacker being able to fully deny access to resources in the Vulnerable System; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the Vulnerable System (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).
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 7 Jan 2026
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 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 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
TP-Link Systems Inc.Archer BE400	Affected =0	Fixed in–

AI-suggested

Organizations should immediately inventory their network devices to identify any TP-Link Archer BE400 adapters running the affected firmware version. Since no patches are currently available, mitigation should focus on reducing the attack surface: segment wireless networks to limit adjacency exposure, disable or restrict use of vulnerable devices where possible, and monitor for unusual device reboots or network disruptions. Employing wireless intrusion detection systems (WIDS) can help detect suspicious activity in the adjacent network space. Organizations should maintain close communication with TP-Link for firmware updates and apply patches promptly once released. Additionally, consider deploying alternative network adapters from vendors without known vulnerabilities to reduce risk. Network administrators should also educate users about the risks of connecting to untrusted wireless networks where attackers could be present.

Description

CVE-2025-14631 is a high-severity NULL Pointer Dereference vulnerability in the TP-Link Archer BE400 Wi-Fi 6 USB adapter's 802.11 modules. An adjacent attacker can exploit this flaw to cause a denial-of-service (DoS) by triggering a device reboot without requiring authentication or user interaction. The vulnerability affects firmware version xi 1.1.0 Build 20250710 rel.14914. Although no known exploits are currently in the wild, the ease of exploitation and potential for service disruption make this a significant threat. European organizations relying on this device for network connectivity could face temporary loss of network access, impacting business operations. Mitigation requires close monitoring for vendor patches and implementing network segmentation to limit attacker proximity.

Impact

For European organizations, the primary impact of CVE-2025-14631 is the potential for denial-of-service on network connectivity due to forced reboots of the Archer BE400 devices. This can disrupt business operations, especially in environments relying on these adapters for stable Wi-Fi 6 connectivity. Critical sectors such as finance, healthcare, and government could experience interruptions in network access, leading to productivity losses or degraded service delivery. Since the attack requires adjacency, environments with dense wireless deployments or public Wi-Fi hotspots are at higher risk. The vulnerability could also be leveraged as part of a broader attack to cause network instability or to facilitate lateral movement by causing device outages. Although no data confidentiality or integrity impact is indicated, the availability disruption alone can have significant operational consequences.

Summary

CVE-2025-14631 is a NULL Pointer Dereference vulnerability classified under CWE-476, found in the TP-Link Archer BE400 V1 Wi-Fi 6 USB adapter's 802.11 modules. This flaw occurs when the device improperly handles certain inputs or states, leading to a NULL pointer dereference that causes the device firmware to crash and reboot unexpectedly. The vulnerability can be triggered by an adjacent attacker—meaning someone within wireless range—without requiring any authentication or user interaction. The affected firmware version is xi 1.1.0 Build 20250710 rel.14914. Exploitation results in a denial-of-service condition by forcing the device to reboot, disrupting network connectivity for the user. The CVSS 4.0 vector indicates the attack vector is adjacent network (AV:A), with low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and a high impact on availability (VA:H). No known public exploits exist yet, and no patches have been released at the time of publication. The vulnerability is significant because it affects the availability of network devices that may be widely deployed in home and enterprise environments, potentially interrupting critical communications.

CWE-476NULL Pointer Dereference (opens in a new tab)
Base weaknessLikelihood of exploit: MediumCWE Top 25 (2025): #13OWASP Top 10 A10:2025: Mishandling of Exceptional Conditions (opens in a new tab)
The product dereferences a pointer that it expects to be valid but is NULL.
Implementation
For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished.
Requirements
Select a programming language that is not susceptible to these issues.
Implementation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
OWASP Cheat Sheets
Logging (opens in a new tab)
Error Handling (opens in a new tab)
OWASP ASVS 4.0.3
V11.1.7 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 14 Jan 2026, 01:49 UTC

WeaknessesCWE-476

Technical details

References

Community reviews

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