CVE-2026-100805
published 2026-09-29CVE-2026-100805: Race condition, use-after-free in the Audio/Video component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
PriorityP338high7.5CVSS 3.1
AVNACHPRNUIRSUCHIHAH
EPSS
0.21%
10.9th percentile
Race condition, use-after-free in the Audio/Video component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 157 | Firefox 157 |
| mozilla | firefox | < 157.0.0 | 157.0.0 |
| mozilla | thunderbird | < Thunderbird 157 | Thunderbird 157 |
| mozilla | thunderbird | < 157.0 | 157.0 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
vendor_redhat7.5HIGH
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Red Hat
firefox: Race condition, use-after-free in the Audio/Video component
vendor_redhat·2026-09-29·CVSS 7.5
CVE-2026-100805 [HIGH] CWE-825 firefox: Race condition, use-after-free in the Audio/Video component
firefox: Race condition, use-after-free in the Audio/Video component
Race condition, use-after-free in the Audio/Video component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
Race condition, use-after-free in the Audio/Video component
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: firefox (Red Hat Enterprise Linux 6) - Not affected
Package: firefox (Red Hat Enterprise Linux 7) - Not affected
Package: firefox (Red Hat Enterprise Linux 8)
Mozilla
Mozilla Foundation Security Advisory 2026-97: CVE-2026-100805
vendor_mozilla·CVSS 7.5
CVE-2026-100805 [HIGH] Mozilla Foundation Security Advisory 2026-97: CVE-2026-100805
Mozilla Foundation Security Advisory 2026-97
CVE: CVE-2026-100805
Product: Firefox
Impact: low
Fixed in: Firefox 157
Mozilla
Mozilla Foundation Security Advisory 2026-101: CVE-2026-100805
vendor_mozilla·CVSS 7.5
CVE-2026-100805 [HIGH] Mozilla Foundation Security Advisory 2026-101: CVE-2026-100805
Mozilla Foundation Security Advisory 2026-101
CVE: CVE-2026-100805
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 157
GHSA
Race condition, use-after-free in the Audio/Video component.
ghsa_unreviewed·2026-09-29
CVE-2026-100805 [HIGH] CWE-362 Race condition, use-after-free in the Audio/Video component.
Race condition, use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 157.
No detection rules found.
No public exploits indexed.
2026-09-29
Published