Email Mayhem: SmarterMail’s Maximum-Security Flaw Unleashed!
Beware the email gremlins! The Cyber Security Agency of Singapore warns of a severe vulnerability in SmarterMail email software that could allow remote code execution. It’s like leaving your front door wide open for hackers. Update to the latest version and keep those digital mischief-makers at bay!

Hot Take:
Who knew that the mailbox could be the new “hacked” office party? SmarterMail’s security flaw might just be your new excuse for not replying to emails – “Sorry, my email’s been hacked, couldn’t possibly be my fault!”
Key Points:
- A critical vulnerability in SmarterTools’ SmarterMail email software could allow remote code execution via arbitrary file uploads.
- The flaw, tracked as CVE-2025-52691, boasts a CVSS score of 10.0, equating it to the cybersecurity equivalent of a 5-alarm fire.
- SmarterMail is a Microsoft Exchange alternative, popular among web hosting providers.
- The vulnerability is patched in Build 9413, released on October 9, 2025, with further updates in Build 9483 as of December 18, 2025.
- Chua Meng Han from CSIT is credited with discovering this vulnerability.
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