ACTIVELY EXPLOITED
CVE-2010-4344: Exim Heap-Based Buffer Overflow Vulnerability
| Vendor | Exim |
|---|---|
| Product | Exim |
| Actively exploited | Yes |
| Added to CISA KEV | 25 Mar 2022 |
| CISA federal deadline | 15 Apr 2022 |
| Weakness (CWE) | CWE-119 |
Required action (CISA's text)
Apply updates per vendor instructions.
Description (NVD)
Heap-based buffer overflow in the string_vformat function in string.c in Exim before 4.70 allows remote attackers to execute arbitrary code via an SMTP session.
SOURCES
Other Exim flaws
- CVE-2010-4345: Exim Privilege Escalation Vulnerability
- CVE-2019-16928: Exim Out-of-bounds Write Vulnerability
- CVE-2019-10149: Exim Mail Transfer Agent (MTA) Improper Input Validation
- CVE-2018-6789: Exim Buffer Overflow Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.