CVE-2009-3456 Security feature bypass in n/a

What is CVE-2009-3456?

CVE-2009-3456 is a high-severity vulnerability in Google Chrome, published on 29 Sep 2009. 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

Google Chrome, possibly 3.0.195.21 and earlier, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Weakness: CWE-310

Which versions are affected by CVE-2009-3456?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2009-3456?

No fix has been published for CVE-2009-3456 yet. Limit exposure of the affected software until one is available.

Is CVE-2009-3456 being exploited?

There is no known exploitation of CVE-2009-3456 in the wild and no public exploit code.

Other vulnerabilities in Google Chrome

• CVE-2022-4135 Google Chromium GPU Heap Buffer Overflow Exploited Critical 9.6
• CVE-2020-16017 Google Chrome Use-After-Free Exploited Critical 9.6
• CVE-2020-16010 Google Chrome for Android UI Heap Buffer Overflow Exploited Critical 9.6
• CVE-2026-87491 Google Chromium V8 Out of Bounds Write Exploited High 8.8
• CVE-2026-85046 Google Chromium V8 Type Confusion Exploited High 8.8

All Google Chrome vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-r4xr-x22c-68gg.