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Case File

CVE-2020-28017

CRITICAL · CVSS 9.8 EPSS 36.90% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-05-06 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 36.9% probability of exploitation in the next 30 days. It may be remotely exploitable.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2020-28017
Severity
CRITICAL
CVSS
9.8
EPSS
36.90%

Original NVD Description

Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow in receive_add_recipient via an e-mail message with fifty million recipients. NOTE: remote exploitation may be difficult because of resource consumption.

Related CVEs

Other vulnerabilities affecting the same vendor(s)