CVE-2026-8970
Privilege escalation in the Security component
Description
Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
INFO
Published Date :
May 19, 2026, 2:16 p.m.
Last Modified :
May 19, 2026, 6:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-8970
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update Firefox to version 151.
- Update Firefox ESR to version 140.11.
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-2026-8970.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-8970 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-2026-8970
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-2026-8970 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-8970 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.
-
CVE Modified by [email protected]
May. 19, 2026
Action Type Old Value New Value Changed Description Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11. Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. Added Reference https://www.mozilla.org/security/advisories/mfsa2026-50/ Added Reference https://www.mozilla.org/security/advisories/mfsa2026-51/ -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 19, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L Added CWE CWE-269 -
New CVE Received by [email protected]
May. 19, 2026
Action Type Old Value New Value Added Description Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11. Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=2032174 Added Reference https://www.mozilla.org/security/advisories/mfsa2026-46/ Added Reference https://www.mozilla.org/security/advisories/mfsa2026-48/