CVE-2026-20650 is a high-severity denial-of-service vulnerability affecting multiple Apple platforms, including iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. The vulnerability arises from improper validation, enabling an attacker situated within a privileged network to launch a denial-of-service attack using specially crafted Bluetooth packets. This could lead to significant disruptions in service availability.
With a CVSS score of 7.5, organizations using affected Apple products are at high risk. The availability impact is rated as high, which indicates a considerable potential for service disruption. Given the exploitation status is currently unknown, organizations must act swiftly to mitigate potential threats.
This vulnerability allows attackers to disrupt services without requiring initial privileges or user interaction, making it particularly concerning for organizations that rely on Apple devices for communication and operational processes. Organizations should prioritize patching immediately.
Apple has addressed this vulnerability in versions 26.3 of iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS. Therefore, all users of these platforms should ensure they are updated to the latest versions to safeguard against this vulnerability.
Vulnerability Details
The denial-of-service issue in CVE-2026-20650 was identified and fixed with improved validation in the affected Apple products. The official description states that an attacker in a privileged network position may exploit this vulnerability using crafted Bluetooth packets. This issue is classified under CWE-400, which pertains to the design flaw that allows denial-of-service conditions.
The impact of this vulnerability is primarily on availability, meaning it could lead to service outages and interruptions for users and organizations. The vulnerability was published on February 11, 2026, and has since been modified in the database.
Technical Analysis
The root cause of the vulnerability stems from insufficient validation mechanisms within the Bluetooth protocol implementation. The attack vector is identified as a network, meaning that an attacker must be within the local network to exploit this vulnerability. The complexity of the attack is deemed low, as it does not require any special privileges or user interaction.
Given that no additional privileges are required, an attacker could potentially disrupt service availability effectively. The availability impact is rated high, indicating that successful exploitation could lead to significant service disruptions across the affected Apple platforms.
Risk & Impact Analysis
Organizations utilizing Apple products should be aware of the real-world risks associated with this vulnerability. An attacker possessing network access could easily leverage this vulnerability to cause significant service disruptions, impacting business operations and user experiences.
The blast radius for this vulnerability is considerable, as many organizations depend on Apple devices for critical tasks. Given the current threat landscape where denial-of-service attacks are increasingly common, organizations must address this vulnerability in their priority patch cycle to mitigate risks.
The urgency for addressing this vulnerability is high due to its potential impact on service availability. Organizations should immediately apply the available patches to prevent exploitation and ensure uninterrupted service.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerable versions of Apple products are all versions prior to 26.3 for iPadOS, iOS, macOS, tvOS, visionOS, and watchOS. Users should ensure they are running the latest version to avoid exposure to this vulnerability.
Mitigation & Remediation
Organizations should promptly apply the updates provided by Apple. The patches are available for iOS 26.3, iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, and watchOS 26.3. If immediate updates are not possible, consider implementing network controls to limit access to Bluetooth functionalities, and enhance monitoring for unusual traffic patterns.
Continuous penetration testing can also help identify potential weaknesses related to this vulnerability and improve overall security posture.
Detection Guidance
Monitoring logs for anomalies related to Bluetooth traffic can help detect attempts to exploit this vulnerability. Additionally, organizations should look for behavioral anomalies that may signify unauthorized access attempts.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-20650 highlights the ongoing need for robust validation mechanisms in wireless communication protocols. This vulnerability represents a pattern where improper validation can lead to major service disruptions.
Security teams should learn from this incident by implementing thorough validation checks in all communication protocols. To gain deeper insights into vulnerabilities and remediation strategies, teams can explore our vulnerability management program and consider adopting our penetration testing methodology to strengthen defenses.
Finally, it is crucial for organizations to engage in proactive security assessments, which can be facilitated through our API penetration testing guide and related resources.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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