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Vulnerability record · CVE-2026-7320 · published 28 April 2026

CVE-2026-7320: Mozilla firefox memory buffer overflow vulnerability

Mozilla · Firefox

Information disclosure due to incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.

7.5 CVSS 3.1 High EPSS 0.60% · top 53.3% CWE-119 · Memory buffer overflowCWE-125 · Out-of-bounds read
7.5CVSS 3.1 base score
0.60%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
31References
15 Jul 2026Last modified by NVD

Description

Information disclosure due to incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.mozilla.org/show_bug.cgi?id=2027433 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-35/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-36/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-37/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-38/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-39/ Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:19153
https://access.redhat.com/errata/RHSA-2026:19157
https://access.redhat.com/errata/RHSA-2026:19348
https://access.redhat.com/errata/RHSA-2026:19370
https://access.redhat.com/errata/RHSA-2026:19588
https://access.redhat.com/errata/RHSA-2026:20586
https://access.redhat.com/errata/RHSA-2026:21743
https://access.redhat.com/errata/RHSA-2026:22324
https://access.redhat.com/errata/RHSA-2026:22408
https://access.redhat.com/errata/RHSA-2026:22409
https://access.redhat.com/errata/RHSA-2026:22410
https://access.redhat.com/errata/RHSA-2026:22708
https://access.redhat.com/errata/RHSA-2026:22712
https://access.redhat.com/errata/RHSA-2026:22847
https://access.redhat.com/errata/RHSA-2026:24345
https://access.redhat.com/errata/RHSA-2026:24717
https://access.redhat.com/errata/RHSA-2026:24718
https://access.redhat.com/errata/RHSA-2026:24719
https://access.redhat.com/errata/RHSA-2026:24721
https://access.redhat.com/errata/RHSA-2026:24844
https://access.redhat.com/errata/RHSA-2026:24846
https://access.redhat.com/errata/RHSA-2026:25014
https://access.redhat.com/security/cve/CVE-2026-7320
https://bugzilla.redhat.com/show_bug.cgi?id=2463483
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7320.json

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-7320), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.