Critical

Firefox, Chrome, Adobe, and VMware Updates Fix Multiple Critical Security Flaws

The Hacker News
Actively Exploited

Overview

Mozilla has rolled out updates for Firefox to fix two serious vulnerabilities that could be exploited by attackers. The flaws, identified as CVE-2026-15718 and CVE-2026-15719, involve issues with JavaScript: WebAssembly and site isolation in the DOM: Navigation component. Mozilla has warned users that exploit code for these vulnerabilities is already available publicly, increasing the urgency for users to update. It’s crucial for Firefox users to install these updates promptly to protect against potential attacks that could compromise their security and privacy. Keeping software up to date is a key defense against such risks.

Key Takeaways

  • Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
  • Affected Systems: Mozilla Firefox versions affected by CVE-2026-15718 and CVE-2026-15719
  • Action Required: Users should update to the latest version of Firefox as soon as possible to mitigate these vulnerabilities.
  • Timeline: Newly disclosed

Original Article Summary

Mozilla has released updates to address two critical flaws in Firefox for which it warned that exploit code has been published. The vulnerabilities are listed below - CVE-2026-15718, an invalid pointer in the JavaScript: WebAssembly component CVE-2026-15719, a site isolation in the DOM: Navigation component "We are aware that exploit code for this is public, however we are not aware of

Impact

Mozilla Firefox versions affected by CVE-2026-15718 and CVE-2026-15719

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Users should update to the latest version of Firefox as soon as possible to mitigate these vulnerabilities.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Google, VMware, and 5 more.

Related Coverage

Google Brings AirDrop Compatibility to Android’s Quick Share Using Rust-Hardened Security

The Hacker News

Google has updated its Quick Share service to enable compatibility with Apple's AirDrop, facilitating easier file sharing between Android and iPhone devices. This feature is currently available for the Pixel 10 lineup and is expected to expand to other devices in the future.

Nov 21, 2025

CISA Adds One Known Exploited Vulnerability to Catalog

All CISA Advisories

CISA has added CVE-2025-13223, a Google Chromium V8 Type Confusion Vulnerability, to its Known Exploited Vulnerabilities Catalog due to evidence of active exploitation. This vulnerability poses significant risks to federal enterprises, prompting CISA to urge timely remediation by all organizations to mitigate potential cyberattacks.

Nov 19, 2025

⚡ Weekly Recap: Fortinet Exploit, Chrome 0-Day, BadIIS Malware, Record DDoS, SaaS Breach & More

The Hacker News

This week, significant cybersecurity threats emerged as hackers exploited new 0-day vulnerabilities in Fortinet and Chrome, infiltrating supply chains and SaaS tools. The rapid response from major companies like Microsoft, Salesforce, and Google highlights the severity of these attacks and the ongoing challenges in securing trusted applications and software updates.

Nov 24, 2025

​​Spyware Allows Cyber Threat Actors to Target Users of Messaging Applications​

All CISA Advisories

CISA has identified that various cyber threat actors are using commercial spyware to target users of mobile messaging applications, employing tactics such as phishing, zero-click exploits, and impersonation. The focus is primarily on high-value individuals including government and military officials, indicating a serious threat to sensitive communications.

Nov 24, 2025

HashJack Attack Uses URL ‘#’ to Control AI Browser Behavior

Hackread – Cybersecurity News, Data Breaches, Tech, AI, Crypto and More

Cato Networks has identified a new vulnerability known as HashJack, which exploits the '#' symbol in URLs to execute malicious commands in AI browsers. While Microsoft and Perplexity have addressed this flaw, Google's Gemini remains vulnerable, highlighting a significant risk for users of that platform.

Nov 29, 2025

Google fixes Android vulnerabilities “under targeted exploitation” (CVE-2025-48633, CVE-2025-48572)

Help Net Security

Google has addressed 51 vulnerabilities in Android, including two high-severity flaws (CVE-2025-48633 and CVE-2025-48572) that are potentially under targeted exploitation. Both vulnerabilities impact the Android Framework, which is essential for app development, and could allow malicious applications to access sensitive information.

Dec 2, 2025