CVE WatchJul 15, 2026

CVE-2026-12289

Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.

CVSS

8.8

High

EPSS

0.4%

p32

KEV

—

Exploit Today

0-100

Published: Jun 16, 2026 · Last modified: Jul 15, 2026 · CWE-269 · CWE-266

EPSS · 30d

0.4%EPSS · 30 days0.4%

2026-06-302026-07-16

Technical description

Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-468179.8 CRI

60.3%

KEV—68Oracle E-Business Suite Improper Privilege Management Vulnerability21h CVE-2022-250899.8 CRI

96.9%

——29Printix Secure Cloud Print Management through 1.3.1106.0 incorrectly uses Privileged APIs to modify values in HKEY_LOCAL_MACHINE via UITasks.PersistentRegistryData.8d CVE-2026-503437.8 HIG

83.2%

——25Improper privilege management in Microsoft Install Service allows an authorized attacker to elevate privileges locally.2d CVE-2022-262517.2 HIG

75.4%

——23The HTTP interface of Synaman v5.1 and below was discovered to allow authenticated attackers to execute arbitrary code and escalate privileges.8d CVE-2026-463337.1 HIG

69.0%

——21In the Linux kernel, the following vulnerability has been resolved: ptrace: slightly saner 'get_dumpable()' logic The 'dumpability' of a task is fundamentally about the memory image of the task - the concept comes from whether it can core dump or not - and makes no sense when you don't have an associated mm. And almost all users do in fact use it only for the case where the task has a mm pointer. But we have one odd special case: ptrace_may_access() uses 'dumpable' to check various other things entirely independently of the MM (typically explicitly using flags like PTRACE_MODE_READ_FSCREDS). Including for threads that no longer have a VM (and maybe never did, like most kernel threads). It's not what this flag was designed for, but it is what it is. The ptrace code does check that the uid/gid matches, so you do have to be uid-0 to see kernel thread details, but this means that the traditional "drop capabilities" model doesn't make any difference for this all. Make it all make a *bit* more sense by saying that if you don't have a MM pointer, we'll use a cached "last dumpability" flag if the thread ever had a MM (it will be zero for kernel threads since it is never set), and require a proper CAP_SYS_PTRACE capability to override.2d CVE-2022-456088.8 HIG

54.5%

——16An issue was discovered in ThingsBoard 3.4.1, allows low privileged attackers (CUSTOMER_USER) to gain escalated privileges (vertically) and become an Administrator (TENANT_ADMIN) or (SYS_ADMIN) on the web application. It is important to note that in order to accomplish this, the attacker must know the corresponding API's parameter (authority : value).8d