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Mozilla Firefox EUVDEUVD-2026-24124

| CVE-2026-6783 MEDIUM
Integer Overflow or Wraparound (CWE-190)
2026-04-21 mozilla GHSA-cp9h-w8px-6q24
Integer Overflow Mozilla Buffer Overflow Red Hat Suse
5.3
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SUSE
MEDIUM
qualitative
Red Hat
3.4 LOW
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

Lifecycle Timeline

6
Patch released
Apr 29, 2026 - 02:30 nvd
Patch available
Analysis Generated
Apr 21, 2026 - 18:25 vuln.today
CVSS changed
Apr 21, 2026 - 18:22 NVD
5.3 (MEDIUM)
EUVD ID Assigned
Apr 21, 2026 - 13:15 euvd
EUVD-2026-24124
Analysis Generated
Apr 21, 2026 - 13:15 vuln.today
CVE Published
Apr 21, 2026 - 12:41 nvd
MEDIUM 5.3

DescriptionCVE.org

Incorrect boundary conditions, integer overflow in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150.

AnalysisAI

Integer overflow in Firefox's Audio/Video Playback component allows remote unauthenticated attackers to cause integrity violations through specially crafted multimedia content. The vulnerability stems from incorrect boundary condition handling in numeric calculations, potentially enabling attackers to modify playback state or corrupt audio/video streams without user interaction. Firefox 150 and later contain the fix.

Technical ContextAI

The vulnerability exists in Firefox's multimedia playback engine, specifically in the Audio/Video component responsible for decoding and rendering media streams. Integer overflow (CWE-190) occurs when numeric values used for buffer management, size calculations, or frame indexing exceed their intended range, wrapping to unintended values. This class of defect typically arises in C/C++ codebases where integer arithmetic on media frame dimensions, sample counts, or byte offsets lacks proper validation. The CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* indicates all Firefox versions prior to 150 are affected across all platforms and configurations.

RemediationAI

Update Firefox to version 150 or later immediately. Users can verify their current version via Help > About Firefox, which will automatically download and install the latest update. No workarounds are available for older versions; patching is the only mitigation. The fix addresses the underlying integer overflow in boundary condition handling within the Audio/Video Playback component. Consult Mozilla's security advisory at https://www.mozilla.org/security/advisories/mfsa2026-30/ for platform-specific guidance.

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Same weakness CWE-190 – Integer Overflow or Wraparound

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CVE-2013-2729 CRITICAL POC
9.8
CVE-2015-8651 HIGH
8.8
CVE-2012-5054 HIGH POC
8.8
CVE-2014-0569 CRITICAL POC
9.3
CVE-2017-3599 HIGH POC
7.5
CVE-2017-7529 HIGH
7.5
CVE-2016-1010 HIGH
8.8
CVE-2013-3940 CRITICAL
9.3

Same technique Integer Overflow

View all
CVE-2014-0497 CRITICAL POC
9.8
CVE-2013-2729 CRITICAL POC
9.8
CVE-2015-8651 HIGH
8.8
CVE-2012-5054 HIGH POC
8.8
CVE-2014-0569 CRITICAL POC
9.3
CVE-2017-3599 HIGH POC
7.5
CVE-2017-7529 HIGH
7.5
CVE-2016-1010 HIGH
8.8

Vendor StatusVendor

SUSE

Severity: Medium
Product Status
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise High Performance Computing 15 SP7 Fixed
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Fixed

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EUVD-2026-24124 vulnerability details – vuln.today
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