CVE-2026-9957 Use after free in Chrome
A remote attacker can execute arbitrary code inside the sandbox by tricking a user into opening a crafted PDF file in Google Chrome.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-9957?
CVE-2026-9957 is a high-severity use after free vulnerability in Google Chrome, published on 28 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Use after free in PDF in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted PDF file. (Chromium security severity: High)
Weakness: CWE-416
Which versions are affected by CVE-2026-9957?
It affects 1 product.
Products include Google Chrome.
How do I fix CVE-2026-9957?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-9957 being exploited?
There is no known exploitation of CVE-2026-9957 in the wild and no public exploit code.
Other vulnerabilities in Google Chrome
Sources
Also known as DEBIAN-CVE-2026-9957, ECHO-39ff-773f-11df, GHSA-57p3-53g8-w4h6, MINI-286q-hpvq-2f9p.