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CVE-2025-10528

HIGH7.3

Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component

Published Sep 16, 2025

Modified 2 months ago

Fix available

Details

Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.

Affected Packages

Ubuntu:14.04:LTSFirefox

Fixed in:

143

Ubuntu:16.04:LTSFirefox

Fixed in:

143

Ubuntu:18.04:LTSFirefox

Fixed in:

143

Ubuntu:20.04:LTSFirefox

Fixed in:

143

Ubuntu:22.04:LTSFirefox

Fixed in:

143

Ubuntu:24.04:LTSFirefox

Fixed in:

143

Ubuntu:25.04Firefox

Fixed in:

143

Ubuntu:25.10Firefox

Fixed in:

143

Windows:10240Mozilla Firefox

Fixed in:

143

Windows:10240Mozilla Firefox ESR

Fixed in:

140.3

Windows:14393Mozilla Firefox

Fixed in:

143

Windows:14393Mozilla Firefox ESR

Fixed in:

140.3

Windows:17763Mozilla Firefox

Fixed in:

143

Windows:17763Mozilla Firefox ESR

Fixed in:

140.3

Windows:18362Mozilla Firefox

Fixed in:

143

Windows:18362Mozilla Firefox ESR

Fixed in:

140.3

Windows:18363Mozilla Firefox

Fixed in:

143

Windows:18363Mozilla Firefox ESR

Fixed in:

140.3

Windows:19041Mozilla Firefox

Fixed in:

143

Windows:19041Mozilla Firefox ESR

Fixed in:

140.3

Windows:19042Mozilla Firefox

Fixed in:

143

Windows:19042Mozilla Firefox ESR

Fixed in:

140.3

Windows:19043Mozilla Firefox

Fixed in:

143

Windows:19043Mozilla Firefox ESR

Fixed in:

140.3

Windows:19044Mozilla Firefox

Fixed in:

143

Windows:19044Mozilla Firefox ESR

Fixed in:

140.3

Windows:19045Mozilla Firefox

Fixed in:

143

Windows:19045Mozilla Firefox ESR

Fixed in:

140.3

Windows:20348Mozilla Firefox

Fixed in:

143

Windows:20348Mozilla Firefox ESR

Fixed in:

140.3

Windows:22000Mozilla Firefox

Fixed in:

143

Windows:22000Mozilla Firefox ESR

Fixed in:

140.3

Windows:22621Mozilla Firefox

Fixed in:

143

Windows:22621Mozilla Firefox ESR

Fixed in:

140.3

Windows:22631Mozilla Firefox

Fixed in:

143

Windows:22631Mozilla Firefox ESR

Fixed in:

140.3

Windows:25398Mozilla Firefox

Fixed in:

143

Windows:25398Mozilla Firefox ESR

Fixed in:

140.3

Windows:26100Mozilla Firefox

Fixed in:

143

Windows:26100Mozilla Firefox ESR

Fixed in:

140.3

Windows:26200Mozilla Firefox

Fixed in:

143

Windows:26200Mozilla Firefox ESR

Fixed in:

140.3

macOS:14Firefox

Fixed in:

143

macOS:14Firefox ESR

Fixed in:

140.3

macOS:15Firefox

Fixed in:

143

macOS:15Firefox ESR

Fixed in:

140.3

macOS:26Firefox

Fixed in:

143

macOS:26Firefox ESR

Fixed in:

140.3

References

WEBhttps://bugzilla.mozilla.org/show_bug.cgi?id=1986185 WEBhttps://lists.debian.org/debian-lts-announce/2025/09/msg00020.html WEBhttps://lists.debian.org/debian-lts-announce/2025/09/msg00026.html ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2025-10528 WEBhttps://www.mozilla.org/security/advisories/mfsa2025-73/WEBhttps://www.mozilla.org/security/advisories/mfsa2025-75/WEBhttps://www.mozilla.org/security/advisories/mfsa2025-77/WEBhttps://www.mozilla.org/security/advisories/mfsa2025-78/

CVSS Analysis

CVSS v3.1

7.3

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

LowC:L

Integrity

LowI:L

Availability

LowA:L

7.3/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Timeline

PublishedSep 16, 2025

ModifiedNov 3, 2025

CVE-2025-10528 | Mondoo Vulnerability Intelligence