CVE-2026-74973
published 2026-08-18CVE-2026-74973: Race condition, use-after-free in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR…
PriorityP419medium4.2CVSS 3.1
AVNACHPRNUIRSUCLILAN
EPSS
0.18%
7.2th percentile
Race condition, use-after-free in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Affected
16 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 154 | Firefox 154 |
| mozilla | firefox | < 115.39.0 | 115.39.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 116.0 < 140.14.0 | 140.14.0 |
| mozilla | firefox | >= 141.0 < 153.1.0 | 153.1.0 |
| mozilla | firefox_esr | < Firefox ESR 115.39 | Firefox ESR 115.39 |
| mozilla | firefox_esr | < Firefox ESR 140.14 | Firefox ESR 140.14 |
| mozilla | firefox_esr | < Firefox ESR 153.1 | Firefox ESR 153.1 |
| mozilla | thunderbird | < Thunderbird 154 | Thunderbird 154 |
| mozilla | thunderbird | < Thunderbird 140.14 | Thunderbird 140.14 |
| mozilla | thunderbird | < Thunderbird 153.1 | Thunderbird 153.1 |
| mozilla | thunderbird | < 140.14.0 | 140.14.0 |
| mozilla | thunderbird | — | — |
| mozilla | thunderbird | >= 141.0 < 153.1.0 | 153.1.0 |
| rhel10 | firefox-flatpak | — | — |
| rhel10 | thunderbird-flatpak | — | — |
CVSS provenance
nvdv3.14.2MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
vendor_redhat4.2MEDIUM
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Red Hat
firefox: Race condition, use-after-free in the Graphics component
vendor_redhat·2026-08-18·CVSS 4.2
CVE-2026-74973 [MEDIUM] CWE-825 firefox: Race condition, use-after-free in the Graphics component
firefox: Race condition, use-after-free in the Graphics component
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
Race condition, use-after-free in the Graphics 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) - Affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: rhel10/thunderbird-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: thunderbird (Red Hat Enterprise Linux 10) - Affected
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: thunderbird (Red Hat Enterprise Linux 6) - Out of support scope
Package: firefox (Red Hat
Mozilla
Mozilla Foundation Security Advisory 2026-75: CVE-2026-74973
vendor_mozilla
CVE-2026-74973 Mozilla Foundation Security Advisory 2026-75: CVE-2026-74973
Mozilla Foundation Security Advisory 2026-75
CVE: CVE-2026-74973
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 115.39
Mozilla
Mozilla Foundation Security Advisory 2026-76: CVE-2026-74973
vendor_mozilla
CVE-2026-74973 Mozilla Foundation Security Advisory 2026-76: CVE-2026-74973
Mozilla Foundation Security Advisory 2026-76
CVE: CVE-2026-74973
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 140.14
Mozilla
Mozilla Foundation Security Advisory 2026-77: CVE-2026-74973
vendor_mozilla
CVE-2026-74973 Mozilla Foundation Security Advisory 2026-77: CVE-2026-74973
Mozilla Foundation Security Advisory 2026-77
CVE: CVE-2026-74973
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 153.1
Mozilla
Mozilla Foundation Security Advisory 2026-78: CVE-2026-74973
vendor_mozilla
CVE-2026-74973 Mozilla Foundation Security Advisory 2026-78: CVE-2026-74973
Mozilla Foundation Security Advisory 2026-78
CVE: CVE-2026-74973
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 154
Mozilla
Mozilla Foundation Security Advisory 2026-79: CVE-2026-74973
vendor_mozilla
CVE-2026-74973 Mozilla Foundation Security Advisory 2026-79: CVE-2026-74973
Mozilla Foundation Security Advisory 2026-79
CVE: CVE-2026-74973
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 140.14
Mozilla
Mozilla Foundation Security Advisory 2026-80: CVE-2026-74973
vendor_mozilla
CVE-2026-74973 Mozilla Foundation Security Advisory 2026-80: CVE-2026-74973
Mozilla Foundation Security Advisory 2026-80
CVE: CVE-2026-74973
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 153.1
Mozilla
Mozilla Foundation Security Advisory 2026-74: CVE-2026-74973
vendor_mozilla
CVE-2026-74973 Mozilla Foundation Security Advisory 2026-74: CVE-2026-74973
Mozilla Foundation Security Advisory 2026-74
CVE: CVE-2026-74973
Product: Firefox
Impact: high
Fixed in: Firefox 154
GHSA
Race condition, use-after-free in the Graphics component.
ghsa_unreviewed·2026-08-18
CVE-2026-74973 [MEDIUM] CWE-362 Race condition, use-after-free in the Graphics component.
Race condition, use-after-free in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, and Firefox ESR 153.1.
No detection rules found.
No public exploits indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=2060357https://www.mozilla.org/security/advisories/mfsa2026-74/https://www.mozilla.org/security/advisories/mfsa2026-75/https://www.mozilla.org/security/advisories/mfsa2026-76/https://www.mozilla.org/security/advisories/mfsa2026-77/https://www.mozilla.org/security/advisories/mfsa2026-78/https://www.mozilla.org/security/advisories/mfsa2026-79/https://www.mozilla.org/security/advisories/mfsa2026-80/
2026-08-18
Published