CVE-2026-28604 in Android
Summary
by MITRE • 09/08/2026
In multiple locations, there is a possible use after free due to a race condition. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.
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Analysis
by VulDB Data Team • 09/08/2026
The vulnerability described represents a critical security flaw characterized by a race condition that leads to a use-after-free memory corruption error. In software engineering, particularly in systems programming and complex application architectures, memory management errors are among the most dangerous classes of vulnerabilities because they can fundamentally alter program execution flow. A use-after-free occurs when a program continues to use a pointer after the memory it points to has been freed or deallocated. This specific instance is exacerbated by a race condition, meaning that the vulnerability arises from a timing discrepancy in concurrent operations. Specifically, one thread or process may free a block of memory while another thread or process still holds a reference to that same block and attempts to access or modify its contents before the system has fully synchronized state changes across all active contexts. This lack of proper synchronization allows an attacker to manipulate the state of the application during this narrow window of opportunity, leading to unpredictable behavior that can be exploited for malicious purposes.
The operational impact of this vulnerability is severe due to its potential for remote code execution without requiring user interaction or elevated privileges. Remote code execution implies that an adversary located on a different system within the network perimeter can send crafted requests or data packets to trigger the flaw, thereby gaining control over the affected application's process space. The absence of additional execution privileges needed means that even if the vulnerable service is running under restricted permissions typical for web servers or background daemons, successful exploitation could allow the attacker to escalate their access level by executing arbitrary code within that context. Furthermore, the fact that user interaction is not required significantly lowers the barrier to entry for attackers, enabling automated scanning and widespread propagation of exploits across internet-facing services without needing social engineering tactics such as phishing links or file downloads initiated by a victim.
From an industry standards perspective, this vulnerability maps directly to Common Weakness Enumeration identifier CWE-416, which defines use after free errors. The presence of the race condition further aligns with CWE-362, indicating concurrent execution error where shared resources are accessed without proper locking mechanisms. In terms of offensive security frameworks like MITRE ATT&CK, this vulnerability facilitates techniques associated with initial access and privilege escalation. Attackers would likely leverage this flaw to inject shellcode or establish a reverse connection back to their command-and-control infrastructure. The lack of user interaction places it firmly in categories involving automated exploitation tools that target known vulnerabilities in widely deployed software components, making timely patching essential for maintaining the integrity of affected systems.
Mitigation strategies must address both the immediate code defect and broader architectural weaknesses related to concurrency control. Developers should implement rigorous memory management practices, ensuring that pointers are nullified immediately after freeing associated memory blocks to prevent dangling references from being used inadvertently. Implementing robust locking mechanisms or atomic operations around critical sections where shared resources are accessed can eliminate the race condition window that enables this exploit. Additionally, adopting modern programming languages with automatic garbage collection and bounds checking can reduce the likelihood of such low-level memory errors occurring in new codebases. For existing systems, deploying runtime protection technologies such as address space layout randomization, data execution prevention, and heap hardening techniques like safe unlinking or guard pages can mitigate the impact by making it significantly harder for attackers to reliably control program flow even if a use-after-free condition is triggered. Regular security audits focusing on multithreaded code paths are also recommended to identify similar synchronization flaws before they can be exploited in production environments.