CVE-2025-10533 — Integer Overflow or Wraparound in Mozilla Firefox

CWE-190 — Integer Overflow or Wraparound12 documents8 sources
Severity
8.8HIGHNVD
EPSS
0.1%
top 73.48%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla ThunderbirdMozilla Firefox
Timeline
PublishedSep 16
Latest updateFeb 2

Description

Integer overflow in the SVG component. This vulnerability was fixed in Firefox 143, Firefox ESR 115.28, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages3 packages

▶NVDmozilla/firefox116.0 — 140.3+2
▶NVDmozilla/thunderbird141.0 — 143.0+1
▶Debianmozilla/thunderbird< 1:140.3.0esr-1~deb11u1+3

🔴Vulnerability Details

3
CVEList
Integer overflow in the SVG component↗2025-09-16
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GHSA
GHSA-wjhw-rxqj-2g2h: This vulnerability affects Firefox < 143, Firefox ESR < 115↗2025-09-16
▶
OSV
CVE-2025-10533: Integer overflow in the SVG component↗2025-09-16
▶

📋Vendor Advisories

8
Ubuntu
Thunderbird vulnerabilities↗2026-02-02
▶
Red Hat
firefox: thunderbird: Integer overflow in the SVG component↗2025-09-16
▶
Debian
CVE-2025-10533: firefox - Integer overflow in the SVG component. This vulnerability affects Firefox < 143,...↗2025
▶
Mozilla
Mozilla Foundation Security Advisory 2025-73: CVE-2025-10533↗
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Mozilla
Mozilla Foundation Security Advisory 2025-75: CVE-2025-10533↗
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CVE-2025-10533 — Integer Overflow or Wraparound | cvebase