CVE-2026-12012: Use After Free
Chromium: CVE-2026-12012 Use after free Network
Other sources
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
— Microsoft
Use after free in Network in Google Chrome prior to 149.0.7827.115 allowed an attacker in a privileged network position to potentially exploit heap corruption via malicious network traffic. (Chromium security severity: High)
— NVD
Credit
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 149.0.4022.69 - Upgrade
Upgrade
Chromium/Google Chrome (and Chromium-based Microsoft Edge)to a version that resolves this vulnerability.Fixed in 149.0.7827.115 - Compensating control
Since exploitation requires an attacker in a privileged network position and malicious network traffic, restrict network traffic to/from privileged network segments (e.g., limit access to sensitive/internal networks) to reduce exposure until the browser is updated to 149.0.7827.115 or later.
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2026-19141
- CVE-2026-13281
- CVE-2026-19155
- CVE-2026-19175
- CVE-2026-12446
- CVE-2026-19153
- CVE-2026-19166
- CVE-2026-15123
- CVE-2026-17680
- CVE-2026-12460
- CVE-2026-9126
- CVE-2026-12456
- CVE-2026-12459
- CVE-2026-15905
- CVE-2026-15127
- CVE-2026-17657
- CVE-2026-15107
- CVE-2026-15118
- CVE-2026-15108
- CVE-2026-15116
- CVE-2026-12451
- CVE-2026-12015
- CVE-2026-15902
- CVE-2026-15778
- CVE-2026-15119
- CVE-2026-15121
- CVE-2026-13031
- CVE-2026-13036
- CVE-2026-16805
- CVE-2026-13853
- CVE-2026-15111
- CVE-2026-12017
- CVE-2026-13023
- CVE-2026-13026
- CVE-2026-13024
- CVE-2026-13854
- CVE-2026-12019
- CVE-2026-10970
- CVE-2026-19140
- CVE-2026-15114
- CVE-2026-19156
- CVE-2026-16423
- CVE-2026-19159
- CVE-2026-11672
- CVE-2026-19157
- CVE-2026-12455
- CVE-2026-17650
- CVE-2026-10956
- CVE-2026-11691
- CVE-2026-11684
- CVE-2026-12014
Frequently Asked Questions
What is the severity of CVE-2026-12012?
The severity of CVE-2026-12012 is rated as high with a CVSS score of 8.1.
How do I fix CVE-2026-12012?
To fix CVE-2026-12012, update Google Chrome to version 149.0.7827.115 or later.
What type of vulnerability is CVE-2026-12012?
CVE-2026-12012 is classified as a use after free vulnerability.
Who is affected by CVE-2026-12012?
Users of Google Chrome versions prior to 149.0.7827.115 are affected by CVE-2026-12012.
What can an attacker do with CVE-2026-12012?
An attacker can potentially exploit heap corruption through malicious network traffic targeting affected systems.