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

Mozilla Fixes Zero-Day Vulnerability

September 13, 2023
Reading Time: 2 mins read
in Alerts

Mozilla has issued crucial security updates to address a critical zero-day vulnerability (CVE-2023-4863) discovered in its Firefox web browser and Thunderbird email client. This vulnerability, characterized as a heap buffer overflow flaw in the WebP image format, has already been actively exploited in real-world attacks.

Furthermore, the flaw, if successfully exploited, could enable remote attackers to execute arbitrary code by manipulating specially crafted images. Mozilla responded swiftly to this threat, releasing updates to safeguard its users.

At the same time, the vulnerability’s severity prompted Mozilla to take immediate action, given the potential consequences of arbitrary code execution on users’ systems. This development closely follows Google’s release of a fix for the same vulnerability in its Chrome browser, indicating that threat actors had been actively exploiting it across different platforms.

Mozilla’s security advisory confirmed that the flaw’s exploitation extended beyond their products to affect other software. The company urged users to update their Firefox and Thunderbird installations to the latest versions to mitigate the risk.

Mozilla credited Apple Security Engineering and Architecture (SEAR) and the Citizen Lab at the University of Toronto’s Munk School for reporting the security issue.

While specific details regarding the nature of the attacks and their targets remain undisclosed, it is suspected that these zero-day vulnerabilities are being weaponized to target high-risk individuals, including activists, dissidents, and journalists.

Reference:
  • Security Vulnerability fixed in Firefox 117.0.1, Firefox ESR 115.2.1, Firefox ESR 102.15.1, Thunderbird 102.15.1, and Thunderbird 115.2.2
Tags: Cyber AlertCyber Alerts 2023CybersecurityFirefoxMozillaSeptember 2023ThunderbirdVulnerabilitieszero-day vulnerability
ADVERTISEMENT

Related Posts

Smishing targets routers in Belgium 2025

Smishing targets routers in Belgium 2025

October 2, 2025
Smishing targets routers in Belgium 2025

Outlook Bug Causes Repeated Crashes

October 2, 2025
Smishing targets routers in Belgium 2025

MatrixPDF Toolkit Turns PDFs Into Lures

October 2, 2025
Microsoft Sentinel Unveils AI SIEM

Apple Pushes iPhone and Mac Updates

October 1, 2025
Microsoft Sentinel Unveils AI SIEM

Tesla Fixes TCU Bug With USB Risk

October 1, 2025
Microsoft Sentinel Unveils AI SIEM

EvilAI Malware Posing As AI Tools

October 1, 2025

Latest Alerts

Outlook Bug Causes Repeated Crashes

Smishing targets routers in Belgium 2025

MatrixPDF Toolkit Turns PDFs Into Lures

Tesla Fixes TCU Bug With USB Risk

Apple Pushes iPhone and Mac Updates

EvilAI Malware Posing As AI Tools

Subscribe to our newsletter

    Latest Incidents

    Allianz Life July Breach Hits 1.5M

    Dealership Software Breach Hits 766k

    Suffolk Website Down After Cyber-Attack

    WestJet Confirms Data Breach

    Ransomware Gang Recruits Reporter

    US Surveillance Hack Exposes Data

    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