CVE-2026-58963 in Android
Summary
by MITRE • 11/02/2026
In multiple locations, there is a possible denial of service due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.
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Analysis
by VulDB Data Team • 11/02/2026
The vulnerability described represents a critical security flaw characterized by insufficient input validation within the application logic, which directly facilitates a remote denial of service condition. In software engineering and cybersecurity frameworks, this type of defect is formally categorized under CWE-20 Improper Input Validation according to the Common Weakness Enumeration standard. The core technical issue lies in the failure of the system to adequately sanitize or verify incoming data before processing it. When an attacker submits malformed, excessively large, or structurally invalid input, the application fails to handle these edge cases gracefully. Instead of rejecting the bad data with a controlled error message, the software enters an unrecoverable state, crashes, or hangs indefinitely. This lack of robustness in handling unexpected inputs is a fundamental design flaw that undermines the reliability and availability of the service.
From an operational perspective, this vulnerability allows for remote exploitation without requiring any prior authentication or elevated privileges on the target system. The absence of required user interaction further lowers the barrier to entry for attackers, enabling automated scanning tools and opportunistic adversaries to exploit the weakness with minimal effort. Once triggered, the denial of service condition disrupts normal operations, rendering the affected application or service unavailable to legitimate users. This impacts business continuity, potentially leading to significant financial losses, reputational damage, and erosion of user trust. In environments where high availability is paramount, such as web services, API endpoints, or network infrastructure components, this vulnerability poses a severe risk to overall system stability.
The exploitation mechanism typically involves sending specifically crafted requests that trigger the internal processing errors due to the missing validation checks. Because no additional execution privileges are needed, the attack surface is broad and accessible from any network location where the service is reachable. This aligns with tactics observed in automated vulnerability scanning campaigns and distributed denial of service attacks aimed at disrupting critical infrastructure. The simplicity of the exploit means that even attackers with limited technical expertise can successfully compromise the availability aspect of the CIA triad, which stands for Confidentiality, Integrity, and Availability.
To mitigate this risk, developers must implement rigorous input validation strategies across all entry points where external data is received. This includes enforcing strict type checking, length limits, format constraints, and range validations on all user-supplied inputs. Utilizing allow-listing approaches rather than deny-listing ensures that only expected data patterns are processed, rejecting everything else by default. Additionally, implementing resource management controls such as timeouts, rate limiting, and memory usage caps can prevent a single malicious request from consuming excessive system resources or causing infinite loops. Deploying web application firewalls with rules designed to detect anomalous input patterns can also provide an additional layer of defense against exploitation attempts while the underlying code is being patched. Regular security testing, including fuzzing and penetration testing, should be integrated into the development lifecycle to identify such validation gaps early before deployment.