Menu

  • Alerts
  • Incidents
  • News
  • APTs
  • Cyber Decoded
  • Cyber Hygiene
  • Cyber Review
  • Cyber Tips
  • Definitions
  • Malware
  • Threat Actors
  • Tutorials

Useful Tools

  • Password generator
  • Report an incident
  • Report to authorities
No Result
View All Result
CTF Hack Havoc
CyberMaterial
  • Education
    • Cyber Decoded
    • Definitions
  • Information
    • Alerts
    • Incidents
    • News
  • Insights
    • Cyber Hygiene
    • Cyber Review
    • Tips
    • Tutorials
  • Support
    • Contact Us
    • Report an incident
  • About
    • About Us
    • Advertise with us
Get Help
Hall of Hacks
  • Education
    • Cyber Decoded
    • Definitions
  • Information
    • Alerts
    • Incidents
    • News
  • Insights
    • Cyber Hygiene
    • Cyber Review
    • Tips
    • Tutorials
  • Support
    • Contact Us
    • Report an incident
  • About
    • About Us
    • Advertise with us
Get Help
No Result
View All Result
Hall of Hacks
CyberMaterial
No Result
View All Result
Home Alerts

Zero-Day Vulnerability in Exim MTA

October 2, 2023
Reading Time: 2 mins read
in Alerts

A critical zero-day vulnerability in the Exim mail transfer agent (MTA) software has been discovered, posing a significant security risk to servers exposed to the Internet. This security flaw, identified as CVE-2023-42115, is categorized as an Out-of-bounds Write vulnerability located within the SMTP service of Exim.

Attackers can potentially exploit this weakness to execute code within the context of the service account, making it a highly concerning threat. The vulnerability was initially reported to the Exim team by the Zero Day Initiative (ZDI) in June 2022, but as of May 2023, there has been no update on patch progress.

Exim MTA servers are appealing targets for cyberattacks, given their widespread use and accessibility over the Internet. The fact that this vulnerability has persisted as a zero-day issue for over a year raises concerns about the security of many servers worldwide.

Notably, Exim is the default MTA on Debian Linux distributions and is recognized as the most widely used MTA software globally, installed on over 56% of the 602,000 mail servers accessible via the Internet.

While a patch to address the CVE-2023-42115 vulnerability is not yet available, security experts recommend immediate mitigation measures. Admins are advised to restrict remote access from the Internet to minimize the risk of exploitation.

Given the nature of the vulnerability and the potentially high number of vulnerable servers, this precautionary action is crucial to safeguard against potential attacks.

The situation highlights the ongoing challenges in maintaining server security and underscores the need for proactive measures to protect critical infrastructure from emerging threats.

References:
  • (0Day) Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability
  • Exim4 MTA CVEs assigned from ZDI
Tags: Cyber AlertCyber Alerts 2023CybersecurityEximOctober 2023Vulnerabilitieszero-day vulnerability
ADVERTISEMENT

Related Posts

Hackers Target Libraesva Email Flaw

Hackers Target Libraesva Email Flaw

September 30, 2025
Hackers Target Libraesva Email Flaw

ShadowV2 Botnet Targets Misconfigured AWS

September 30, 2025
Hackers Target Libraesva Email Flaw

Cisco Warns Of IOS Zero Day Bug

September 30, 2025
Fake Microsoft Teams Installers Spread

Fake Microsoft Teams Installers Spread

September 30, 2025
Fake Microsoft Teams Installers Spread

Cybercriminals Use Facebook Google Ads

September 30, 2025
Fake Microsoft Teams Installers Spread

CISA Warns Of Critical Sudo Flaw

September 30, 2025

Latest Alerts

Hackers Target Libraesva Email Flaw

ShadowV2 Botnet Targets Misconfigured AWS

Cisco Warns Of IOS Zero Day Bug

CISA Warns Of Critical Sudo Flaw

Cybercriminals Use Facebook Google Ads

Fake Microsoft Teams Installers Spread

Subscribe to our newsletter

    Latest Incidents

    Ukrainian Hackers Breach Crimean Servers

    Ransomware Gang Claims Maryland Breach

    Arizona School District Data Breach

    Attackers Take Down Asahi Brewer

    Harrods Alerts Customers To Breach

    Hackers Steal Photos From Kido Nursery

    CyberMaterial Logo
    • About Us
    • Contact Us
    • Jobs
    • Legal and Privacy Policy
    • Site Map

    © 2025 | CyberMaterial | All rights reserved

    Welcome Back!

    Login to your account below

    Forgotten Password?

    Retrieve your password

    Please enter your username or email address to reset your password.

    Log In

    Add New Playlist

    No Result
    View All Result
    • Alerts
    • Incidents
    • News
    • Cyber Decoded
    • Cyber Hygiene
    • Cyber Review
    • Definitions
    • Malware
    • Cyber Tips
    • Tutorials
    • Advanced Persistent Threats
    • Threat Actors
    • Report an incident
    • Password Generator
    • About Us
    • Contact Us
    • Advertise with us

    Copyright © 2025 CyberMaterial