{"id":59672,"date":"2025-07-27T03:28:06","date_gmt":"2025-07-27T03:28:06","guid":{"rendered":""},"modified":"2025-10-03T23:55:37","modified_gmt":"2025-10-04T05:55:37","slug":"cve-2025-7624-critical-sql-injection-vulnerability-in-sophos-firewall-s-legacy-smtp-proxy","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-7624-critical-sql-injection-vulnerability-in-sophos-firewall-s-legacy-smtp-proxy\/","title":{"rendered":"CVE-2025-7624: Critical SQL Injection Vulnerability in Sophos Firewall’s Legacy SMTP Proxy<\/strong>"},"content":{"rendered":"

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

In the ongoing struggle to keep our digital environments secure, cybersecurity professionals continually discover new vulnerabilities that can potentially compromise system security. One such vulnerability, recently marked as CVE-2025-7624, affects the legacy SMTP proxy of Sophos Firewall versions older than 21.0 MR2 (21.0.2). The vulnerability is particularly severe as it can lead to remote<\/a> code execution if a quarantining policy is active for Email and SFOS was upgraded from a version older than 21.0 GA.
\nThis vulnerability is a grave concern for any organization using the affected Sophos<\/a> Firewall versions, as it poses a significant risk of system compromise or data leakage. It is of utmost importance to understand this vulnerability and take the necessary steps to mitigate its potential<\/a> impact.<\/p>\n

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

CVE ID: CVE-2025-7624
\nSeverity: Critical (9.8 CVSS Score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise or data<\/a> leakage upon successful exploitation<\/p>\n

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

Product | Affected Versions<\/p>\n

Sophos Firewall | Versions older than 21.0 MR2 (21.0.2)<\/p>\n

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

The exploit takes advantage of an SQL injection vulnerability<\/a> in the legacy SMTP proxy of the affected Sophos Firewall versions. An attacker could craft a malicious SQL query to trick the system into executing arbitrary SQL commands<\/a>. When successful, this could lead to remote code execution<\/a>, potentially giving the attacker full control over the compromised system. This is particularly dangerous if a quarantining policy is active for Email and SFOS was upgraded from a version older than 21.0 GA.<\/p>\n

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

Here is a conceptual example of how the vulnerability might be exploited. This is a sample HTTP request<\/a>, demonstrating how an attacker could inject malicious SQL commands into the system.<\/p>\n

POST \/smtp_proxy\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ \"email\": \"admin'; DROP TABLE users; --\" }<\/code><\/pre>\n
In this example, the attacker is attempting to trick the system into executing the SQL<\/a> command `DROP TABLE users;` after the legitimate command `admin`. If successful, this would delete the entire ‘users’ database table<\/a>, potentially causing significant damage.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
Users are advised to apply the vendor patch as soon as possible to mitigate the risk of this vulnerability<\/a>. If this is not immediately possible, users can use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure, which can help monitor and block potential SQL injection<\/a> attempts.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview In the ongoing struggle to keep our digital environments secure, cybersecurity professionals continually discover new vulnerabilities that can potentially compromise system security. One such vulnerability, recently marked as CVE-2025-7624, affects the legacy SMTP proxy of Sophos Firewall versions older than 21.0 MR2 (21.0.2). The vulnerability is particularly severe as it can lead to remote […]<\/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":[80,74],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59672","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-rce","attack_vector-sql-injection"],"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