AirDrop Quick Share Flaws: Critical Nearby Attack Risks

Security researchers have disclosed AirDrop Quick Share Flaws, revealing multiple vulnerabilities affecting Apple's AirDrop and Samsung/Google Quick Share technologies. While no evidence of active exploitation has been reported, the flaws demonstrate that attackers located within wireless range may be able to crash services, bypass security checks, or manipulate file-sharing sessions under certain conditions.

The vulnerabilities were discovered by researchers Arash Ale Ebrahim and Nils Ole Tippenhauer from the CISPA Helmholtz Center for Information Security. Their findings show that several modern wireless sharing features — including AirDrop, AirPlay, Handoff, Universal Clipboard, Continuity Camera, NameDrop, and Quick Share — could become targets if users are nearby and vulnerable devices have not been updated.

Although the attacks require physical proximity — typically within approximately 10–30 meters or on the same local network — the research highlights how trusted convenience features can introduce unexpected security risks when protocol validation or memory safety protections fail.

Apple AirDrop is Apple's wireless file-sharing feature that allows users to transfer photos, documents, videos, and other files between nearby Apple devices without requiring cables or internet connectivity. AirDrop is deeply integrated with Apple's Continuity ecosystem, enabling additional features such as:

AirPlay
Handoff
Universal Clipboard
Continuity Camera
NameDrop

Similarly, Samsung and Google offer Quick Share, enabling Android and Windows devices to exchange files over Bluetooth and Wi-Fi.

Because these services continuously advertise nearby devices, they must securely validate incoming requests before establishing trusted communication sessions. The newly disclosed research suggests weaknesses exist within that validation process.

What Caused the Vulnerabilities?

According to the researchers, six separate vulnerabilities were identified across Apple's AirDrop implementation and Samsung/Google Quick Share.

The issues fall into multiple categories, including:

Improper request validation
Session authentication bypass
Memory corruption
Stack overflow
Use-after-free memory handling
Dencryption/session management weaknesses

None of the vulnerabilities require prior pairing between the attacker and victim device. Instead, an attacker only needs to be within wireless communication range.

Researchers emphasized that these attacks exploit weaknesses in wireless discovery and session establishment rather than traditional internet-based attack vectors.

Timeline of Events

Security researchers identified six vulnerabilities during protocol analysis.
Responsible disclosure was coordinated with Apple, Google, and Samsung.
Apple patched one AirDrop vulnerability.
Google released a fix for the Windows Quick Share issue and awarded a security bounty.
Samsung continues investigating the remaining Quick Share vulnerabilities.
At the time of disclosure, researchers reported no evidence of attacks occurring in the wild.

Apple AirDrop Vulnerabilities

Researchers discovered three separate issues affecting Apple's wireless sharing infrastructure.

1. AirDrop Denial-of-Service Attack

One vulnerability allows an attacker to repeatedly send malformed discovery requests toward devices configured to receive AirDrop requests from Everyone.

Potential impact includes:

Crash of the sharingd process
Continuous denial-of-service
Temporary loss of wireless sharing functionality

Affected Continuity services include:

AirDrop
AirPlay
Universal Clipboard
Handoff
Continuity Camera
NameDrop

Because the service automatically restarts, attackers may repeatedly trigger crashes until the device leaves wireless range.

2. Foundation XML Parser Stack Overflow

Researchers also identified a stack overflow inside Apple's Foundation XML parser.

The flaw affects several Apple operating systems, including:

macOS
iOS
iPadOS
watchOS
tvOS
visionOS

Although no public exploitation has been reported, stack overflow vulnerabilities may introduce application instability and could potentially enable more severe attacks depending on future exploit development.

3. Additional AirDrop Security Weakness

Researchers disclosed a third AirDrop-related issue that remains under coordinated disclosure.

Apple has reportedly assigned a CVE identifier to one vulnerability, while advisory details for the remaining issues are expected following the responsible disclosure process.

Two vulnerabilities affect Samsung's implementation of Quick Share.

According to the researchers, attackers may bypass session validation mechanisms both before and after encrypted communication begins.

Possible consequences include:

Unauthorized session manipulation
Circumvention of expected authentication checks
Unexpected interaction with nearby Quick Share sessions

Samsung is currently investigating these findings.

Researchers also discovered a use-after-free memory vulnerability affecting Quick Share for Windows.

The flaw exists because memory can be accessed after it has already been released, potentially resulting in:

Application crashes
Memory corruption
Possible code execution under certain conditions

Researchers additionally observed that Control Flow Guard (CFG) — a Windows exploit mitigation designed to prevent control-flow hijacking — was disabled in the affected application, potentially increasing exploitability.

Google has released a security update addressing the issue and rewarded the researchers through its vulnerability reward program. A CVE identifier is expected to be assigned.

What Systems Could Be Affected?

Depending on the vulnerability, affected platforms include:

Apple Ecosystem

macOS
iOS
iPadOS
watchOS
tvOS
visionOS

Affected features include:

AirDrop
AirPlay
Handoff
Universal Clipboard
Continuity Camera
NameDrop

Android and Windows Ecosystem

Samsung Quick Share
Google Quick Share
Quick Share for Windows

Potential Risks & Impact

Identity and Privacy Risk

While the disclosed vulnerabilities are not known to expose personal data directly, successful exploitation could interrupt trusted communication between nearby devices or enable unauthorized interaction with wireless sharing sessions.

Since many users rely on AirDrop and Quick Share for exchanging confidential documents, repeated service disruptions may also affect productivity and trust in wireless file-sharing technologies.

Business and Enterprise Risk

Organizations that allow employees to use wireless sharing features may face temporary operational disruption if attackers exploit denial-of-service vulnerabilities in crowded environments such as offices, conferences, airports, or public venues.

Enterprises managing fleets of Apple or Samsung devices should prioritize timely deployment of available security updates and review device-sharing policies to reduce unnecessary exposure.

Official Response

Apple has addressed one of the reported AirDrop vulnerabilities through Apple Security Updates.

Google has patched the Quick Share for Windows vulnerability, awarded a security bounty to the researchers, and is expected to publish a CVE identifier.

Samsung has acknowledged the reported Quick Share issues and continues investigating the findings.

The researchers stated that they found no evidence of active exploitation at the time of disclosure. Nevertheless, users are encouraged to install the latest software updates as they become available and avoid leaving wireless sharing features unnecessarily exposed in public environments.

Wireless file-sharing technologies have become a standard feature across smartphones, tablets, and computers, allowing users to exchange files quickly without cables or cloud services. However, as these services become more integrated into operating systems, they also expand the attack surface available to threat actors.

Researchers have increasingly identified vulnerabilities in proximity-based communication protocols such as Bluetooth, Wi-Fi Direct, Near Field Communication (NFC), and proprietary file-sharing services. Unlike traditional internet-based attacks, these exploits require attackers to be physically nearby, making them particularly concerning in crowded public spaces such as airports, offices, conferences, universities, and shopping malls.

The latest findings involving AirDrop and Quick Share reinforce the importance of secure protocol design, robust input validation, and memory-safe programming practices. Even though these vulnerabilities require close physical proximity, organizations should not underestimate their potential impact, especially in environments where sensitive information is routinely exchanged between devices.

For readers interested in similar security incidents, explore CyberNexora News' Cyber Incidents category.

To learn best practices for protecting devices from emerging threats, visit the Learn & Protect section.

How to Protect Yourself and Your Organization

Although there is currently no evidence that these vulnerabilities are being actively exploited, users should take proactive steps to reduce their exposure.

Install security updates immediately. Keep Apple, Samsung, Google, and Windows devices updated with the latest security patches.
Disable AirDrop or Quick Share when not in use. Turning off wireless sharing significantly reduces the attack surface.
Avoid using "Everyone" mode. Configure AirDrop to Contacts Only whenever possible.
Limit wireless sharing in public places. Avoid enabling discoverable file-sharing modes in airports, hotels, cafes, and conferences.
Keep endpoint protection enabled. Enterprise environments should ensure endpoint detection and response (EDR) solutions remain active and updated.
Monitor vendor security advisories. Follow official announcements from Apple, Google, Samsung, and enterprise IT teams regarding newly released patches.
Educate employees about wireless risks. Security awareness training should include proximity-based attacks alongside phishing and malware threats.
Review enterprise device policies. Organizations should evaluate whether unrestricted wireless sharing is necessary on corporate-managed devices.

Key Takeaways

Researchers disclosed six vulnerabilities affecting Apple AirDrop and Samsung/Google Quick Share.
The flaws can enable denial-of-service attacks, session manipulation, and memory-related vulnerabilities under specific conditions.
Attacks require attackers to be within approximately 10–30 meters or on the same local network.
Apple has patched one AirDrop vulnerability, while Google has fixed the Windows Quick Share issue.
Samsung continues investigating the reported Quick Share vulnerabilities.
No evidence of active exploitation has been reported.

The disclosure of AirDrop Quick Share Flaws demonstrates that even trusted convenience features can become attractive attack vectors when protocol validation or memory handling weaknesses exist. Although these vulnerabilities require attackers to be physically nearby and there is currently no indication of active exploitation, the findings highlight the importance of timely patch management and secure software development.

As coordinated disclosure continues, additional technical details, CVE identifiers, and vendor advisories are expected to become available. Users and organizations should continue monitoring official security updates from Apple, Google, and Samsung, apply patches promptly, and follow security best practices when using wireless file-sharing features.

For additional cybersecurity guidance and the latest vulnerability news, explore CyberNexora News' Cyber Incidents, Learn & Protect, and Resources sections.

Contents

AirDrop Quick Share Flaws: Why It Matters

What Are AirDrop and Quick Share?