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CVE-2026-5732

Incorrect boundary conditions, integer overflow in the Graphics: Text component

HIGH
8.8
CVSS Score
Published: April 7, 2026 at 12:43 PM UTC
Updated: October 24, 2026 at 01:10 PM UTC
2 products affected across 2 vendorsFirefoxEnterprise Linux

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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability affects Firefox < 149.0.2 and Firefox ESR < 140.9.1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Firefox· Mozilla
95%
v < 140.9.1v < 149.0.2
Vendor states this is fixed in 140.9.1 (unaffected)
Vendor states this is fixed in 149.0.2 (unaffected)
Enterprise Linux· Red Hatrpm
60%
10
Vendor states this is fixed in 10 (unaffected)
Vendor states this is fixed in 8 (unaffected)
Vendor states this is fixed in 9 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (32)

Issue TrackingPermissions Required
Source: cverecord
https://bugzilla.mozilla.org/show_bug.cgi?id=2017867
Vendor Advisory
Source: cverecord
https://www.mozilla.org/security/advisories/mfsa2026-25/
Vendor Advisory
Source: cverecord
https://www.mozilla.org/security/advisories/mfsa2026-27/
Source: cverecord
https://www.mozilla.org/security/advisories/mfsa2026-28/
Source: cverecord
https://www.mozilla.org/security/advisories/mfsa2026-29/
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:11805
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:11813
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:12264

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190

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