Lucene search
K
Catalog
Vendors
Products
Timeline
Vulnerabilities
Sources
Documentation
Blog
Glossary
FAQ
Brand assets
Assessment
Agents dashboard
Agent Scanning
API Scanning
Assessment API
Alerts
Email notifications
Webhook notifications
Alerts API
SBOM package analysis
API Reference
Support
Settings
Sign in

The vulnerability in the libvpx component of Mozilla Firefox, Firefox ESR, and the Thunderbird email client allows a hacker to induce a service failure.

🗓️ 20 Feb 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec
 bdu_fstec🔗 bdu.fstec.ru👁 6 Views

A libvpx vulnerability in Firefox, Firefox ESR, and Thunderbird enables remote service failure via buffer overflow.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
FreeBSD		Mozilla -- Heap buffer overflow
16 Feb 202600:00
–freebsd
IBM Security Bulletins		Security Bulletin: IBM Cloud Pak for Data System 1.0 is affected by multiple vulnerabilities
9 Jun 202606:07
–ibm
IBM Security Bulletins		Security Bulletin: IBM QRadar SIEM is vulnerable to using components with known vulnerabilities
23 Apr 202618:09
–ibm
ATTACKERKB		CVE-2026-2447
16 Feb 202614:13
–attackerkb
Tenable Nessus		Amazon Linux 2023 : firefox (ALAS2023-2026-1469)
6 Mar 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : thunderbird, --advisory ALAS2-2026-3190 (ALAS-2026-3190)
6 Mar 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : firefox, --advisory ALAS2FIREFOX-2026-053 (ALASFIREFOX-2026-053)
6 Mar 202600:00
–nessus
Tenable Nessus		AlmaLinux 8 : firefox (ALSA-2026:3338)
5 Mar 202600:00
–nessus
Tenable Nessus		AlmaLinux 9 : firefox (ALSA-2026:3339)
26 Feb 202600:00
–nessus
Tenable Nessus		AlmaLinux 10 : firefox (ALSA-2026:3361)
26 Feb 202600:00
–nessus
Rows per page
Vulners
Node
mozillafirefox_esrRange<115.32.1
OR
mozillafirefox_esrRange116.0–140.7.1
OR
mozillafirefoxRange<147.0.4
OR
mozillathunderbirdRange<140.7.2
OR
mozillathunderbirdRange141.0–147.0.2

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

Book a live demo
26 May 2026 00:00Current
6.1Medium risk
Vulners AI Score6.1
CVSS 38.8
CVSS 210
EPSS0.006
video codec libraryfirefox vulnerabilityremote service failurebuffer overflow
6