{"id":64087,"date":"2025-08-16T03:29:33","date_gmt":"2025-08-16T03:29:33","guid":{"rendered":""},"modified":"2025-09-27T07:38:56","modified_gmt":"2025-09-27T13:38:56","slug":"cve-2025-25278-local-arbitrary-code-execution-in-openharmony-v5-0-3-and-prior-versions","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-25278-local-arbitrary-code-execution-in-openharmony-v5-0-3-and-prior-versions\/","title":{"rendered":"CVE-2025-25278: Local Arbitrary Code Execution in OpenHarmony v5.0.3 and Prior Versions<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

The Common Vulnerabilities and Exposures (CVE) system has recently identified a significant vulnerability, designated as CVE-2025-25278, that affects OpenHarmony v5.0.3 and all prior versions. This vulnerability presents a serious threat as it allows a local attacker to execute arbitrary code in tcb via a race condition, potentially leading to system compromise or significant data leakage. This blog post aims to provide a comprehensive understanding of the vulnerability<\/a>, its potential impacts, and guidance on how to mitigate its risks.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-25278
\nSeverity: High (8.4\/10 on CVSS Severity Score)
\nAttack Vector: Local
\nPrivileges Required: Low
\nUser Interaction: None
\nImpact: Potential system<\/a> compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

OpenHarmony | v5.0.3 and prior versions<\/a><\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability lies in the tcb of OpenHarmony<\/a>. Tcb (thread control block) is a data structure in OS kernel<\/a> which holds thread-specific data needed to manage the thread. The vulnerability arises due to a race condition<\/a>, which is a type of flaw that occurs when the behavior of a software system depends on the sequence or timing of other uncontrollable events.
\nIn this case, the race condition can be manipulated by a local attacker to execute arbitrary code<\/a>. This means that an attacker with access to the system can exploit this vulnerability<\/a> to potentially take control of the system or cause data leakage, creating a severe security risk.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

The following is a conceptual example of how the vulnerability might be exploited. In a real-world scenario, the actual malicious payload would be specifically crafted by an attacker to exploit the target system:<\/p>\n

$ .\/exploit_program --tcb_race_condition --execute_arbitrary_code<\/code><\/pre>\n
In this example, `exploit_program` is a hypothetical utility an attacker might use to exploit the race condition in tcb and execute arbitrary code<\/a>. Note that this is a simplified representation and actual exploitation would involve more sophisticated techniques and tools.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
The primary mitigation for this vulnerability is to apply the vendor patch. OpenHarmony has been notified about the vulnerability and they are likely to release<\/a> a patch to address it. All users running a vulnerable version<\/a> of OpenHarmony should apply this patch as soon as it becomes available.
\nIn the interim, or for those unable to apply the patch immediately, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as temporary mitigation. These systems can help detect and block attempts to exploit this vulnerability<\/a>. However, they are not a complete solution and should be used in conjunction with the vendor patch for optimal protection.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The Common Vulnerabilities and Exposures (CVE) system has recently identified a significant vulnerability, designated as CVE-2025-25278, that affects OpenHarmony v5.0.3 and all prior versions. This vulnerability presents a serious threat as it allows a local attacker to execute arbitrary code in tcb via a race condition, potentially leading to system compromise or significant data […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[88],"product":[95],"attack_vector":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-64087","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-linux","product-linux-kernel","attack_vector-rce"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t