CVE-2026-100756

CVE Enrichment

CVSS: 8.1 HIGH
EPSS: 0.31%
EPSS Percentile: 21.81%
CISA KEV: Not listed

Description

Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: security@mozilla.org
Published: 29-Sep-2026 20:17
Last Modified: 06-Oct-2026 21:37
EPSS Date: 2026-10-11
CWE: CWE-119

CVSS Vector


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

Affected Products / Versions

mozilla / firefox
Version / affected range: * · from (inclusive) 115.0 · before (exclusive) 115.42.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla / firefox
Version / affected range: * · from (inclusive) 140.0.0 · before (exclusive) 140.17.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla / firefox
Version / affected range: * · from (inclusive) 153.0.0 · before (exclusive) 153.4.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla / firefox
Version / affected range: * · from (inclusive) 154.0.0 · before (exclusive) 157.0.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla / thunderbird
Version / affected range: * · from (inclusive) 140.0 · before (exclusive) 140.17.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
mozilla / thunderbird
Version / affected range: * · from (inclusive) 153.0 · before (exclusive) 153.4.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
mozilla / thunderbird
Version / affected range: * · from (inclusive) 154.0 · before (exclusive) 157.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

References

Last enrichment sync: 12-Oct-2026 06:36
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

CVE-2026-19042, CVE-2026-16444, CVE-2026-12703 (TeamViewer), CVE-2026-102331 (Google Chrome), from CVE-2026-100756 through CVE-2026-100793 (Mozilla Firefox), CVE-2026-54154, CVE-2026-102147, CVE-2026-102149, Weekly Security Recap: Exploited Citrix NetScaler Flaw and Dozens of Vulnerabilities

CVE (135)

Vendors (1)

Products (2)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.