CVE-2026-2759

CWE-138413 documents9 sources
Severity
9.8CRITICAL
EPSS
0.1%
top 79.62%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Mozilla FirefoxMozilla Firefox ESRMozilla Thunderbird
Timeline
PublishedFeb 24

Description

Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages7 packages

▶CVEListV5mozilla/firefoxunspecified — 148
▶NVDmozilla/firefox128.0 — 140.8.0+2
▶CVEListV5mozilla/firefox_esrunspecified — 115.33+1
▶Debianfirefox-esr< 140.8.0esr-1~deb11u1+3
▶CVEListV5mozilla/thunderbirdunspecified — 148+1

🔴Vulnerability Details

3
CVEList
Incorrect boundary conditions in the Graphics: ImageLib component↗2026-02-24
▶
OSV
CVE-2026-2759: Incorrect boundary conditions in the Graphics: ImageLib component↗2026-02-24
▶
GHSA
GHSA-3hhv-j9r2-hr9c: Incorrect boundary conditions in the Graphics: ImageLib component↗2026-02-24
▶

📋Vendor Advisories

7
Red Hat
firefox: thunderbird: Incorrect boundary conditions in the Graphics: ImageLib component↗2026-02-24
▶
Debian
CVE-2026-2759: firefox - Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerab...↗2026
▶
Mozilla
Mozilla Foundation Security Advisory 2026-13: CVE-2026-2759↗
▶
Mozilla
Mozilla Foundation Security Advisory 2026-14: CVE-2026-2759↗
▶
Mozilla
Mozilla Foundation Security Advisory 2026-16: CVE-2026-2759↗
▶

🕵️Threat Intelligence

1
Wiz
CVE-2026-2759 Impact, Exploitability, and Mitigation Steps | Wiz↗
▶

💬Community

1
Bugzilla
CVE-2026-2759 firefox: thunderbird: Incorrect boundary conditions in the Graphics: ImageLib component↗2026-02-24
▶
CVE-2026-2759 (CRITICAL CVSS 9.8) | Incorrect boundary conditions in th | cvebase.io