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VULNERABILITIES

CVE-2026-109708 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, Thunderbird 153.5, and Firefox ESR 115.44.

Metrics

CVSS 3.x Severity and Vector Strings:

NDDVolerionCVSS-B:7.4 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
CNA: CISA-ADPCVSS-B:9.6 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://bugzilla.mozilla.org/show_bug.cgi?id=2059151 [email protected]Issue TrackingPermission RequiredVendor
https://www.mozilla.org/security/advisories/mfsa2026-106/ [email protected]AdvisoryBundleVendor
https://www.mozilla.org/security/advisories/mfsa2026-108/ [email protected]AdvisoryBundleVendor
https://www.mozilla.org/security/advisories/mfsa2026-109/ [email protected]AdvisoryBundleVendor
https://www.mozilla.org/security/advisories/mfsa2026-110/ [email protected]AdvisoryBundleVendor

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferCISA-ADP

Affected Products

ProductVersions
Mozilla Firefox
All versions

CPE

  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

Remediation

  • Upgrade: 158moderate effort
Mozilla Firefox ESR
All versions

CPE

  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*

Remediation

  • Upgrade: 153.5moderate effort
Mozilla Thunderbird
All versions

CPE

  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

Remediation

  • Upgrade: 158moderate effort
  • Upgrade: 153.5moderate effort

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-109708
NVD Published Date:
Oct 13, 2026
NVD Last Modified:
Oct 27, 2026
Source:
[email protected]
CVE-2026-109708 Details - Not Deferred