High severity · published Apr 28, 2026
CVE-2026-7320
Information disclosure due to incorrect boundary conditions in the Audio/Video component
7.5
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 115.35.1; before 150.0.1; 128.0 before 140.10.1 · source: NVD
TH
Thunderbird · Mozilla
before 140.10.1; before 150.0.1 · source: NVD
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 10.0 Extended Update Support · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 6 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 7 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 7 Extended Lifecycle Support · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 8 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On · Red Hat
All versions, or not specified · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-7320
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-7320
Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=2027433
Vendor Advisory
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/
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