CVE-2026-100775
published 2026-09-29CVE-2026-100775: Sandbox escape in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox…
PriorityP346critical9.6CVSS 3.1
AVNACLPRNUIRSCCHIHAH
EPSS
0.33%
24.1th percentile
Sandbox escape in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 157 | Firefox 157 |
| mozilla | firefox | >= 115.0.1 < 115.42.0 | 115.42.0 |
| mozilla | firefox | >= 140.0.0 < 140.17.0 | 140.17.0 |
| mozilla | firefox | >= 153.0.0 < 153.4.0 | 153.4.0 |
| mozilla | firefox | >= 154.0.0 < 157.0.0 | 157.0.0 |
| mozilla | firefox_esr | < Firefox ESR 153.4 | Firefox ESR 153.4 |
| mozilla | firefox_esr | < Firefox ESR 115.42 | Firefox ESR 115.42 |
| mozilla | firefox_esr | < Firefox ESR 140.17 | Firefox ESR 140.17 |
| mozilla | thunderbird | < Thunderbird 140.17 | Thunderbird 140.17 |
| mozilla | thunderbird | < Thunderbird 153.4 | Thunderbird 153.4 |
| mozilla | thunderbird | < Thunderbird 157 | Thunderbird 157 |
| mozilla | thunderbird | >= 140.0 < 140.17.0 | 140.17.0 |
| mozilla | thunderbird | >= 153.0 < 153.4.0 | 153.4.0 |
| mozilla | thunderbird | >= 154.0 < 157.0 | 157.0 |
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Mozilla
Mozilla Foundation Security Advisory 2026-102: CVE-2026-100775
vendor_mozilla
CVE-2026-100775 Mozilla Foundation Security Advisory 2026-102: CVE-2026-100775
Mozilla Foundation Security Advisory 2026-102
CVE: CVE-2026-100775
Product: Thunderbird
Impact: moderate
Fixed in: Thunderbird 140.17
Mozilla
Mozilla Foundation Security Advisory 2026-100: CVE-2026-100775
vendor_mozilla
CVE-2026-100775 Mozilla Foundation Security Advisory 2026-100: CVE-2026-100775
Mozilla Foundation Security Advisory 2026-100
CVE: CVE-2026-100775
Product: Firefox ESR
Impact: low
Fixed in: Firefox ESR 153.4
Mozilla
Mozilla Foundation Security Advisory 2026-103: CVE-2026-100775
vendor_mozilla
CVE-2026-100775 Mozilla Foundation Security Advisory 2026-103: CVE-2026-100775
Mozilla Foundation Security Advisory 2026-103
CVE: CVE-2026-100775
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 153.4
Mozilla
Mozilla Foundation Security Advisory 2026-98: CVE-2026-100775
vendor_mozilla
CVE-2026-100775 Mozilla Foundation Security Advisory 2026-98: CVE-2026-100775
Mozilla Foundation Security Advisory 2026-98
CVE: CVE-2026-100775
Product: Firefox ESR
Impact: moderate
Fixed in: Firefox ESR 115.42
Mozilla
Mozilla Foundation Security Advisory 2026-99: CVE-2026-100775
vendor_mozilla
CVE-2026-100775 Mozilla Foundation Security Advisory 2026-99: CVE-2026-100775
Mozilla Foundation Security Advisory 2026-99
CVE: CVE-2026-100775
Product: Firefox ESR
Impact: moderate
Fixed in: Firefox ESR 140.17
Mozilla
Mozilla Foundation Security Advisory 2026-101: CVE-2026-100775
vendor_mozilla
CVE-2026-100775 Mozilla Foundation Security Advisory 2026-101: CVE-2026-100775
Mozilla Foundation Security Advisory 2026-101
CVE: CVE-2026-100775
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 157
Mozilla
Mozilla Foundation Security Advisory 2026-97: CVE-2026-100775
vendor_mozilla
CVE-2026-100775 Mozilla Foundation Security Advisory 2026-97: CVE-2026-100775
Mozilla Foundation Security Advisory 2026-97
CVE: CVE-2026-100775
Product: Firefox
Impact: low
Fixed in: Firefox 157
VulDB
Mozilla Firefox up to 115.41/140.16/153.3/156 Graphics privileges management (WID-SEC-2026-3654)
vuldb·2026-10-03·CVSS 9.6
CVE-2026-100775 [CRITICAL] Mozilla Firefox up to 115.41/140.16/153.3/156 Graphics privileges management (WID-SEC-2026-3654)
A vulnerability was found in Mozilla Firefox up to 115.41/140.16/153.3/156. It has been rated as critical. The impacted element is an unknown function of the component Graphics. The manipulation leads to improper privilege management.
This vulnerability is documented as CVE-2026-100775. The attack can be initiated remotely. There is not any exploit available.
Upgrading the affected component is advised.
GHSA
Sandbox escape in the Graphics component.
ghsa_unreviewed·2026-09-29
CVE-2026-100775 Sandbox escape in the Graphics component.
Sandbox escape in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=2068367https://www.mozilla.org/security/advisories/mfsa2026-100/https://www.mozilla.org/security/advisories/mfsa2026-101/https://www.mozilla.org/security/advisories/mfsa2026-102/https://www.mozilla.org/security/advisories/mfsa2026-103/https://www.mozilla.org/security/advisories/mfsa2026-97/https://www.mozilla.org/security/advisories/mfsa2026-98/https://www.mozilla.org/security/advisories/mfsa2026-99/
2026-09-29
Published