CVE-2026-58868 in Android
Summary
by MITRE • 11/02/2026
In onOutputReceived of FrameDecoder.cpp, there is a possible out-of-bounds write due to a heap buffer overflow. 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 • 11/03/2026
The vulnerability identified in the onOutputReceived function within FrameDecoder.cpp represents a critical security flaw characterized by an out-of-bounds write resulting from a heap buffer overflow. This type of memory corruption issue arises when the application writes data beyond the allocated boundaries of a heap-allocated buffer, typically due to insufficient validation of input length or improper calculation of copy operations. In the context of frame decoding, this often occurs during the processing of network packets or media streams where the size of incoming data is not strictly bounded against the pre-allocated destination buffer. The absence of rigorous bounds checking allows an attacker to overwrite adjacent memory structures on the heap, which can corrupt metadata such as allocation headers, function pointers, or virtual table pointers depending on the specific implementation and compiler used.
The operational impact of this vulnerability is severe due to its potential for remote code execution without requiring user interaction or elevated privileges. Because the flaw resides in a component likely responsible for processing incoming data streams, an attacker can craft maliciously formatted frames that trigger the overflow when processed by the vulnerable service. The lack of required user interaction significantly lowers the barrier to exploitation, allowing for automated attacks where a victim merely needs to connect to a compromised server or receive a specially crafted packet stream. This characteristic aligns with high-severity ratings in vulnerability databases and poses a significant risk to systems relying on this framework for real-time communication or media processing.
From a technical classification perspective, this flaw maps directly to CWE-122: Heap-based Buffer Overflow, which describes the writing of data past the end or beginning of a heap-allocated buffer. The exploitation technique leverages memory corruption primitives to gain control over program execution flow, corresponding to ATT&CK techniques such as T1059 Command and Scripting Interpreter if shellcode is executed via injected code, or more broadly under privilege escalation vectors depending on the context in which the vulnerable process runs. The ability to execute arbitrary code with no additional privileges means that even sandboxed processes can potentially be escaped if memory isolation mechanisms are bypassed through this overflow.
Mitigation strategies must focus on implementing strict input validation and bounds checking within the FrameDecoder.cpp module. Developers should ensure that all incoming frame data is validated against the maximum expected size before any copy operations occur, utilizing safe string handling functions or container classes that enforce length limits automatically. Additionally, enabling compiler-level protections such as AddressSanitizer during development can help detect these issues early in the lifecycle. For deployed systems, deploying network intrusion detection signatures that identify anomalous frame sizes and implementing memory protection mechanisms like Data Execution Prevention (DEP) and Address Space Layout Randomization (ASLR) can reduce the likelihood of successful exploitation by making it harder to predict memory layouts and execute injected code.