Disclosed
CVE-2026-7320
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.
Exploitation Probability (EPSS)
Low Priority0.05%
The Exploit Prediction Scoring System (EPSS) uses machine learning to estimate the probability that a vulnerability will be exploited in the wild within the next 30 days.
0% (Theoretical)100% (Certainty)
7-Day Exploitation Trend
Vulnerability Timeline
2 eventsApr 28, 2026
Vulnerability Disclosed
Published to component-level vulnerability database.
May 1, 2026
Last Updated
Record updated with new analysis or tags.
Threat Actor Attribution
PREMIUM INTELAssociated Groups:Lazarus Group, APT28
Ransomware Campaigns:LockBit 3.0, BlackCat
IoCs (Indicators):14 IPs, 3 Hashes
Remediation & Mitigation
SOLUTIONOfficial patches and mitigation steps are available for this vulnerability.
# Update Command
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name
Affected Products
2 Total
mozilla/firefoxAll Versions
mozilla/thunderbirdAll Versions
References
https://bugzilla.mozilla.org/show_bug.cgi?id=2027433Mozilla
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-35/Mozilla
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-36/Mozilla
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-37/Mozilla
Vendor Advisory
Am I Vulnerable?
Check your domain or package.json for CVE-2026-7320 exposure.
Vulnerability Details
CVSS Base Score
7.5/ 10
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published Date
Apr 28, 2026
Last Modified
May 1, 2026
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