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CVE Vulnerability Details :

CVE-2026-8949

PUBLISHED

More Info Official Page

Assigner-mozilla

Assigner Org ID-f16b083a-5664-49f3-a51e-8d479e5ed7fe

Published At-19 May, 2026 | 12:29

Updated At-19 May, 2026 | 14:05

▼CVE Numbering Authority (CNA)

Integer overflow in the Widget: Win32 component

Integer overflow in the Widget: Win32 component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.

Affected Products

Vendor

Mozilla Corporation

Product

Firefox

Versions

Unaffected

From 140.11 through 140.* (rpm)
From 151 through * (rpm)

Credits

References

Hyperlink	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1355639	N/A
https://www.mozilla.org/security/advisories/mfsa2026-46/	N/A
https://www.mozilla.org/security/advisories/mfsa2026-48/	N/A

Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1355639

Resource: N/A

Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-46/

Resource: N/A

Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-48/

Resource: N/A

▼Authorized Data Publishers (ADP)

CISA ADP Vulnrichment

Problem Types

Type	CWE ID	Description
CWE	CWE-190	CWE-190 Integer Overflow or Wraparound

Type: CWE

CWE ID: CWE-190

Description: CWE-190 Integer Overflow or Wraparound

Metrics

Version	Base score	Base severity	Vector
3.1	7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Version: 3.1

Base score: 7.5

Base severity: HIGH

Vector:

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

Unaffected

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References

Affected Products

Problem Types

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References