mozilla firefox CVE-2026-117917 vulnerability in Mozilla Products
Published on October 27, 2026

Invalid pointer in the Graphics: WebRender component

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Invalid pointer in the Graphics: WebRender component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

NVD

Vulnerability Analysis

CVE-2026-117917 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

Access of Uninitialized Pointer

The program accesses or uses a pointer that has not been initialized.


Products Associated with CVE-2026-117917

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Mozilla Firefox
 
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Affected Versions

Mozilla Firefox: Mozilla Thunderbird: