CVE-2026-92035
published 2026-09-15CVE-2026-92035: Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Thunderbird 140.17, Firefox 156, Firefox ESR…
PriorityP346critical9.6CVSS 3.1
AVNACLPRNUIRSCCHIHAH
EPSS
0.33%
24.4th percentile
Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Thunderbird 140.17, Firefox 156, Firefox ESR 153.3, Thunderbird 156, Thunderbird 153.3, Firefox ESR 115.42, and Firefox ESR 140.17.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 156 | Firefox 156 |
| mozilla | firefox | < 115.42.0 | 115.42.0 |
| mozilla | firefox | >= 116.0 < 140.17.0 | 140.17.0 |
| mozilla | firefox | >= 141.0 < 153.3.0 | 153.3.0 |
| mozilla | firefox | >= 154.0.0 < 156.0.0 | 156.0.0 |
| mozilla | firefox_esr | < Firefox ESR 140.17 | Firefox ESR 140.17 |
| mozilla | firefox_esr | < Firefox ESR 153.3 | Firefox ESR 153.3 |
| mozilla | firefox_esr | < Firefox ESR 115.42 | Firefox ESR 115.42 |
| mozilla | thunderbird | < Thunderbird 153.3 | Thunderbird 153.3 |
| mozilla | thunderbird | < Thunderbird 140.17 | Thunderbird 140.17 |
| mozilla | thunderbird | < Thunderbird 156 | Thunderbird 156 |
| mozilla | thunderbird | < 140.17.0 | 140.17.0 |
| mozilla | thunderbird | >= 141.0 < 153.3.0 | 153.3.0 |
| mozilla | thunderbird | >= 154.0 < 156.0 | 156.0 |
CVSS provenance
nvdv3.19.6CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
vendor_redhat7.5HIGH
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Red Hat
firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics component
vendor_redhat·2026-09-15·CVSS 7.5
CVE-2026-92035 [HIGH] CWE-501 firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics component
firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics component
Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Sandbox escape due to incorrect boundary conditions 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) - Not affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/thunderbird-flatpak (Red Hat Ent
Mozilla
Mozilla Foundation Security Advisory 2026-96: CVE-2026-92035
vendor_mozilla
CVE-2026-92035 Mozilla Foundation Security Advisory 2026-96: CVE-2026-92035
Mozilla Foundation Security Advisory 2026-96
CVE: CVE-2026-92035
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 153.3
Mozilla
Mozilla Foundation Security Advisory 2026-102: CVE-2026-92035
vendor_mozilla·CVSS 9.6
CVE-2026-92035 [CRITICAL] Mozilla Foundation Security Advisory 2026-102: CVE-2026-92035
Mozilla Foundation Security Advisory 2026-102
CVE: CVE-2026-92035
Product: Thunderbird
Impact: moderate
Fixed in: Thunderbird 140.17
Mozilla
Mozilla Foundation Security Advisory 2026-99: CVE-2026-92035
vendor_mozilla·CVSS 9.6
CVE-2026-92035 [CRITICAL] Mozilla Foundation Security Advisory 2026-99: CVE-2026-92035
Mozilla Foundation Security Advisory 2026-99
CVE: CVE-2026-92035
Product: Firefox ESR
Impact: moderate
Fixed in: Firefox ESR 140.17
Mozilla
Mozilla Foundation Security Advisory 2026-90: CVE-2026-92035
vendor_mozilla
CVE-2026-92035 Mozilla Foundation Security Advisory 2026-90: CVE-2026-92035
Mozilla Foundation Security Advisory 2026-90
CVE: CVE-2026-92035
Product: Firefox
Impact: low
Fixed in: Firefox 156
Mozilla
Mozilla Foundation Security Advisory 2026-94: CVE-2026-92035
vendor_mozilla
CVE-2026-92035 Mozilla Foundation Security Advisory 2026-94: CVE-2026-92035
Mozilla Foundation Security Advisory 2026-94
CVE: CVE-2026-92035
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 156
Mozilla
Mozilla Foundation Security Advisory 2026-93: CVE-2026-92035
vendor_mozilla
CVE-2026-92035 Mozilla Foundation Security Advisory 2026-93: CVE-2026-92035
Mozilla Foundation Security Advisory 2026-93
CVE: CVE-2026-92035
Product: Firefox ESR
Impact: low
Fixed in: Firefox ESR 153.3
Mozilla
Mozilla Foundation Security Advisory 2026-98: CVE-2026-92035
vendor_mozilla·CVSS 9.6
CVE-2026-92035 [CRITICAL] Mozilla Foundation Security Advisory 2026-98: CVE-2026-92035
Mozilla Foundation Security Advisory 2026-98
CVE: CVE-2026-92035
Product: Firefox ESR
Impact: moderate
Fixed in: Firefox ESR 115.42
VulDB
Mozilla Firefox up to 153.2/155 Graphics sandbox (EUVD-2026-78498)
vuldb·2026-09-21·CVSS 9.6
CVE-2026-92035 [CRITICAL] Mozilla Firefox up to 153.2/155 Graphics sandbox (EUVD-2026-78498)
A vulnerability was found in Mozilla Firefox up to 153.2/155. It has been rated as critical. This vulnerability affects unknown code of the component Graphics. Performing a manipulation results in sandbox issue.
This vulnerability is reported as CVE-2026-92035. The attack is possible to be carried out remotely. No exploit exists.
Upgrading the affected component is advised.
GHSA
Sandbox escape due to incorrect boundary conditions in the Graphics component.
ghsa_unreviewed·2026-09-15
CVE-2026-92035 Sandbox escape due to incorrect boundary conditions in the Graphics component.
Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 156 and Firefox ESR 153.3.
No detection rules found.
No public exploits indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=2061245https://www.mozilla.org/security/advisories/mfsa2026-102/https://www.mozilla.org/security/advisories/mfsa2026-90/https://www.mozilla.org/security/advisories/mfsa2026-93/https://www.mozilla.org/security/advisories/mfsa2026-94/https://www.mozilla.org/security/advisories/mfsa2026-96/https://www.mozilla.org/security/advisories/mfsa2026-98/https://www.mozilla.org/security/advisories/mfsa2026-99/
2026-09-15
Published