Critical Exim bug bypasses security filters on 1.5 million mail servers
Censys warns that over 1.5 million Exim mail transfer agent (MTA) instances are unpatched against a critical vulnerability that lets threat actors bypass security filters.
90s Vulns In 90s Software (Exim) - Is the Sky Falling?
A few days ago, ZDI went public with no less than six 0days in the popular mail server Exim. Ranging from ‘potentially world-ending' through to ‘a bit of a damp squib’, these bugs were apparently discovered way back in June 2022 (!) - but naturally got caught up in the void between the ZDI and Exim for quite some time. Mysterious void.
Critical vulnerabilities in Exim threaten over 250k email servers worldwide | Ars Technica
Remote code execution requiring no authentication fixed. 2 other RCEs remain unpatched.