CVE-2026-12289

HIGH

CVSS v3.1: 8.8

NetworkNo privilegesPrivilege ManagementVendor advisory ref

Source data as of:

At a glance

Severity
HIGH
CVSS
8.8 v3.1 · NVD
EPSS
EPSS not provided by FIRST.org for this CVE
CISA KEV
No
Type
Privilege Management · NVD CWE
Attack conditions (CVSS vector)
NetworkNo privileges · Source: NVD Vector
Affected vendors
mozilla
Published
2026-06-16 · Modified: 2026-06-16
References
Jump to references (6)

CVSS / EPSS / KEV

CVSS v3.1 8.8 / 10 HIGH Source: NVD
EPSS — EPSS not provided by FIRST.org for this CVE Source: FIRST.org
CISA KEV No Source: CISA

Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources

Description

Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

Record details

CVE ID
CVE-2026-12289
CVSS (v3.1)
8.8 (HIGH)
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitability subscore
2.8
Impact subscore
5.9
CISA KEV
No
Weakness (CWE)
CWE-269
Affected vendors
mozilla
Affected configurations (CPE)
5
Published
2026-06-16
Modified
2026-06-16
Status
Analyzed

References

Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.

Related records

Other records sharing a factual facet, for cross-reference. A descriptive neighbourhood — ordering does not imply priority and is not a recommendation.

Same affected vendor

CVE-2026-12328 HIGH CVSS 8.1 CVE-2026-12319 MEDIUM CVSS 6.5 CVE-2026-12298 MEDIUM CVSS 5.4 CVE-2026-12299 MEDIUM CVSS 5.4

Same weakness type (CWE)

CVE-2026-39118 HIGH CVSS 8.4 CVE-2026-36213 HIGH CVSS 7.8 CVE-2026-8176 HIGH CVSS 7.5 CVE-2024-38487 HIGH CVSS 7.0

Published the same year

CVE-2026-20127 CRITICAL CVSS 10.0 KEV CVE-2026-20182 CRITICAL CVSS 10.0 KEV CVE-2026-48907 CRITICAL CVSS 10.0 KEV CVE-2026-40750 CRITICAL CVSS 9.9
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