The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via vectors involving. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 76.9%.
Denial Of Service
Memory Corruption
Use After Free
RCE
Exim
+1
NVD
GitHub
CVSS 3.0
9.8
EPSS
76.9%
Threat
5.8