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CVE-2025-21463: Denial of Service Vulnerability in Processing EHT Operation IE

Overview

The CVE-2025-21463 vulnerability pertains to a denial-of-service (DoS) issue that arises while processing the EHT operation IE within received beacon frames. This vulnerability is of particular concern to network administrators and security professionals as it could lead to system compromise and data leakage. The severity of this vulnerability is heightened by the fact that it can cause transient interruptions in service, disrupting operations and possibly leading to unauthorized access.

Vulnerability Summary

CVE ID: CVE-2025-21463
Severity: High (CVSS score 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

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Product | Affected Versions

Wireless Router | All versions
Network Access Point | All versions

How the Exploit Works

The exploit works by sending a specifically crafted beacon frame that includes a malformed EHT operation IE. When a vulnerable device receives this beacon frame, it attempts to process the malformed EHT operation IE. This process results in a transient denial-of-service condition that could interrupt network operations and potentially allow an attacker to gain unauthorized access to the system or data.

Conceptual Example Code

The following pseudocode describes a conceptual example of how the vulnerability might be exploited:

import beaconFrame
def exploit(target_ip):
malformed_eht = create_malformed_eht()
frame = beaconFrame.create(malformed_eht)
send_beacon_frame(target_ip, frame)
def create_malformed_eht():
# Create a malformed EHT operation IE
eht = EHT_Operation_IE()
eht.malform()
return eht
def send_beacon_frame(target_ip, frame):
# Send the malformed beacon frame to the target
network.send(target_ip, frame)

Please note that the above code is pseudocode and is not intended for actual use. Its only purpose is to conceptually illustrate how the vulnerability could be exploited.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.
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