Denial-of-service in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Mozilla
  • Firefox
  • Thunderbird

Configuration 1 [-]

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2064601 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-92077 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-92077 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-90/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-90/#CVE-2026-92077 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-93/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-94/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-94/#CVE-2026-92077 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-96/ cve-icon cve-icon
History

Mon, 05 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla thunderbird
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Vendors & Products Mozilla thunderbird

Sun, 20 Sep 2026 01:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 3.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N'}

 ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

Fri, 18 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-770
References
Metrics threat_severity

None

 cvssV3_1

{'score': 3.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N'}

threat_severity

Low

Thu, 17 Sep 2026 19:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400

Wed, 16 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
Description Denial-of-service in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156. Denial-of-service in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
References

Wed, 16 Sep 2026 04:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400

Tue, 15 Sep 2026 20:15:00 +0000

Type Values Removed Values Added
Description Denial-of-service in the SVG component. This vulnerability was fixed in Firefox 156 and Firefox ESR 153.3. Denial-of-service in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
References

Tue, 15 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox

Tue, 15 Sep 2026 13:00:00 +0000

Type Values Removed Values Added
Description Denial-of-service in the SVG component. This vulnerability was fixed in Firefox 156 and Firefox ESR 153.3.
Title Denial-of-service in the SVG component
References
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-09-15T12:34:39.246Z

Updated: 2026-09-20T00:24:23.002Z

Reserved: 2026-09-15T12:34:38.753Z

Link: CVE-2026-92077

cve-icon Vulnrichment

Updated: 2026-09-20T00:24:19.134Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-15T13:17:03.323

Modified: 2026-10-05T19:21:22.490

Link: CVE-2026-92077

cve-icon Redhat

Severity : Low

Publid Date: 2026-09-15T12:34:39Z

Links: CVE-2026-92077 - Bugzilla