Security researchers have uncovered a critical SQL injection vulnerability<\/a> (CVE-2025-26794) in Exim, the widely-used mail transfer agent (MTA) that powers over 60% of internet mail servers.\u00a0<\/p>\n The flaw enables authenticated attackers to execute arbitrary SQL commands through specially crafted ETRN SMTP transactions when specific configuration conditions exist.<\/p>\n The vulnerability was reported through responsible disclosure channels on February 8, 2025, by security researcher Oscar Bataille.\u00a0<\/p>\n The vulnerability highlights critical challenges in mail server configuration security, particularly regarding the interaction between SMTP extensions (ETRN\/RFC 1985) and database backends.\u00a0<\/p>\n The vulnerability manifests in Exim 4.98 installations meeting three specific criteria:<\/p>\n Attack vectors leverage the ETRN command\u2019s serialization mechanism, which improperly sanitizes SQL queries<\/a> when storing transaction metadata.\u00a0<\/p>\n A proof-of-concept exploit might utilize SMTP session manipulation:<\/p>\n This injection<\/a> pattern could compromise SQLite databases containing delivery hints, sender verify records, and TLS session<\/a> cache data.<\/p>\n Successful exploitation enables:<\/p>\n Exim maintainers have released patched versions through standard update channels. System administrators must:<\/p>\n Apply security updates<\/a> immediately via OS package managers or source compilation from code.exim.org<\/p>\n As of patch deployment, no active exploits have been observed in the wild, but the relative ease of exploitation suggests rapid weaponization is likely.<\/p>\n All organizations using Exim for mail routing should prioritize this update, particularly those handling sensitive communications or operating in regulated industries.<\/p>\n Free Webinar: Better SOC with Interactive Malware Sandbox for Incident Response and Threat Hunting \u2013\u00a0Register Here<\/a><\/strong><\/p>\n The post Exim Mail Transfer Vulnerability Let Attackers Inject Malicious SQL Queries<\/a> appeared first on Cyber Security News<\/a>.<\/p>\n<\/div>\nExim Mail Transfer Vulnerability<\/strong><\/h2>\n
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Impact Analysis and Mitigation Strategies<\/strong><\/h2>\n
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