CVE-2026-92055
Privilege escalation in the DevTools component
Description
Privilege escalation in the DevTools component. This vulnerability was fixed in Firefox 156 and Firefox ESR 153.3.
INFO
Published Date :
Sept. 15, 2026, 1:16 p.m.
Last Modified :
Sept. 15, 2026, 1:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update Firefox to version 156 or later.
- Update Firefox ESR to version 153.3 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-92055.
| URL | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2063652 | |
| https://www.mozilla.org/security/advisories/mfsa2026-90/ | |
| https://www.mozilla.org/security/advisories/mfsa2026-93/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-92055 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-92055
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-92055 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-92055 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Sep. 15, 2026
Action Type Old Value New Value Added Description Privilege escalation in the DevTools component. This vulnerability was fixed in Firefox 156 and Firefox ESR 153.3. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/92xxx/CVE-2026-92055.json">CVE-2026-92055</a> Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=2063652 Added Reference https://www.mozilla.org/security/advisories/mfsa2026-90/ Added Reference https://www.mozilla.org/security/advisories/mfsa2026-93/ -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Sep. 15, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Added CWE CWE-269 Added SSVC {'id': 'CVE-2026-92055', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-09-15T13:12:18.440820Z'}