CVE-2025-25277 Overview
CVE-2025-25277 is a type confusion vulnerability (CWE-843) affecting OpenHarmony v5.1.0 and prior versions. This vulnerability allows a local attacker to execute arbitrary code within pre-installed applications by exploiting incompatible type handling. According to the vendor, this vulnerability can only be exploited in restricted scenarios, requiring local access and elevated privileges.
Critical Impact
Local attackers can achieve arbitrary code execution in pre-installed apps through type confusion, potentially compromising device integrity and confidentiality.
Affected Products
- OpenAtom OpenHarmony v5.0.3
- OpenAtom OpenHarmony v5.1.0
- OpenAtom OpenHarmony versions prior to v5.1.0
Discovery Timeline
- 2026-03-16 - CVE-2025-25277 published to NVD
- 2026-03-17 - Last updated in NVD database
Technical Details for CVE-2025-25277
Vulnerability Analysis
This vulnerability stems from a type confusion weakness (CWE-843) within OpenHarmony's handling of pre-installed applications. Type confusion occurs when a program allocates or initializes a resource using one type but later accesses that resource using an incompatible type. In the context of OpenHarmony, this flaw enables attackers to manipulate how the system interprets data structures, leading to arbitrary code execution within the trusted context of pre-installed applications.
The local attack vector means an adversary must already have some level of access to the target device. Combined with the requirement for low privileges, the attack complexity is elevated, making exploitation more difficult but not impossible for a determined attacker with physical or logical access to the device.
Root Cause
The root cause of CVE-2025-25277 lies in improper type handling within OpenHarmony's application framework. When processing certain operations, the system fails to properly validate that the type of an object matches the expected type before performing operations on it. This allows an attacker to supply a maliciously crafted object of an incompatible type, which is then processed as if it were the expected type, corrupting memory state and enabling code execution.
Attack Vector
The attack vector is local, requiring the attacker to have access to the device running a vulnerable version of OpenHarmony. The exploitation process involves:
- Gaining local access to the target OpenHarmony device
- Identifying pre-installed applications susceptible to the type confusion vulnerability
- Crafting malicious input that triggers the type confusion condition
- Leveraging the resulting memory corruption to execute arbitrary code within the context of the pre-installed application
The vulnerability manifests in the type handling mechanisms of pre-installed applications. When an incompatible type is supplied and processed without proper validation, the system misinterprets the data structure, leading to memory corruption that can be exploited for code execution. For detailed technical information, refer to the OpenHarmony Security Disclosure.
Detection Methods for CVE-2025-25277
Indicators of Compromise
- Unusual behavior or crashes in pre-installed OpenHarmony applications
- Unexpected memory access patterns or segmentation faults in application logs
- Evidence of unauthorized code execution within pre-installed app contexts
- Anomalous system calls originating from pre-installed applications
Detection Strategies
- Monitor application behavior for signs of memory corruption or unexpected execution flows
- Implement runtime application self-protection (RASP) to detect type confusion attempts
- Deploy endpoint detection and response (EDR) solutions capable of identifying exploitation attempts
- Review system logs for evidence of exploitation targeting pre-installed applications
Monitoring Recommendations
- Enable verbose logging for pre-installed applications to capture potential exploitation attempts
- Implement file integrity monitoring for critical system components
- Configure alerting for unusual process behavior or privilege escalation attempts
- Regularly audit device access logs to identify unauthorized local access
How to Mitigate CVE-2025-25277
Immediate Actions Required
- Update OpenHarmony to the latest patched version as soon as available
- Restrict physical and remote access to devices running vulnerable OpenHarmony versions
- Review and limit permissions for pre-installed applications where possible
- Monitor for vendor security updates and apply patches promptly
Patch Information
OpenAtom has disclosed this vulnerability through their official security disclosure channel. Administrators should consult the OpenHarmony Security Disclosure for specific patch information and remediation guidance. Update to a patched version of OpenHarmony that addresses the type confusion vulnerability in pre-installed applications.
Workarounds
- Limit local access to devices running vulnerable OpenHarmony versions to trusted users only
- Implement additional access controls and authentication requirements for device access
- Consider disabling or restricting non-essential pre-installed applications until a patch is available
- Deploy network segmentation to isolate potentially vulnerable devices
# Verify OpenHarmony version
# Check current system version to confirm vulnerability status
hdc shell param get const.ohos.fullname
# Review pre-installed applications
hdc shell bm dump -a
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
