CVE-2026-4684
EUVD-2026-1479224.03.2026, 13:16
Race condition, use-after-free in the Graphics: WebRender component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | 0:140.9.0-1.el10_1 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | 0:140.9.0-1.el10_0 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | 0:140.9.0-1.el7_9 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 8 | 0:140.9.0-1.el8_10 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support | 0:140.9.0-1.el8_2 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | 0:140.9.0-1.el8_4 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | 0:140.9.0-1.el8_4 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | 0:140.9.0-1.el8_6 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service | 0:140.9.0-1.el8_6 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | 0:140.9.0-1.el8_6 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | 0:140.9.0-1.el8_8 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | 0:140.9.0-1.el8_8 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 9 | 0:140.9.0-1.el9_7 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | 0:140.9.0-1.el9_0 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | 0:140.9.0-1.el9_2 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | 0:140.9.0-1.el9_4 ≤ 𝑥 < * | ADP |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | 0:140.9.0-1.el9_6 ≤ 𝑥 < * | ADP |
| mozilla | firefox | 𝑥 < 149.0 | CNA |
| mozilla | firefox_esr | 𝑥 < 115.34.0 | CNA |
| mozilla | firefox_esr | 128.0 ≤ 𝑥 < 140.9.0 | CNA |
| mozilla | thunderbird | 𝑥 < 149 | CNA |
| mozilla | thunderbird_esr | 𝑥 < 140.9 | CNA |
Debian Releases
Debian Product | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| firefox |
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| firefox-esr |
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| thunderbird |
|
Ubuntu Releases
Ubuntu Product | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| firefox |
| ||||||||||||
| mozjs102 |
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| mozjs115 |
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| mozjs38 |
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| mozjs52 |
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| mozjs68 |
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| mozjs78 |
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| mozjs91 |
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| thunderbird |
|
openSUSE / SLES Releases
openSUSE Product | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MozillaFirefox |
| ||||||||||||||||||||||||
| MozillaFirefox-devel |
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| MozillaFirefox-translations-common |
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| MozillaFirefox-translations-other |
| ||||||||||||||||||||||||
| MozillaThunderbird |
| ||||||||||||||||||||||||
| MozillaThunderbird-translations-common |
| ||||||||||||||||||||||||
| MozillaThunderbird-translations-other |
|
Red Hat Enterprise Linux Releases
Amazon Linux Releases
Common Weakness Enumeration
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.
- CWE-364 - Signal Handler Race ConditionThe software uses a signal handler that introduces a race condition.
References