CVE-2018-6789CISA KEVEPSS p99.6%

CVE-2018-6789Exim Buffer Overflow Vulnerability

Exim / Exim

Description

Exim contains a buffer overflow vulnerability in the base64d function part of the SMTP listener that may allow for remote code execution.

Scoring

EPSS82.24% probability of exploitation · percentile 99.6% · 2026-06-17T12:03:21Z

CISA KEV entry

Added to KEV: 2021-11-03

(incoming)1

TypeTargetConfidenceTier
KEVEntryExim Buffer Overflow Vulnerabilitykev-cve-2018-67890%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
Exim Out-of-bounds Write Vulnerability
CVE
CVE-2025-67896
CVE
Exim Heap-Based Buffer Overflow Vulnerability
CVE
Exim Mail Transfer Agent (MTA) Improper Input Validation
CVE
CVE-2026-40685
CVE
CVE-2026-48840
Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.