CVE-2009-2121

CVE-2009-2121 is a critical-severity vulnerability in Google Chrome with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Description

Buffer overflow in the browser kernel in Google Chrome before 2.0.172.33 allows remote HTTP servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted response.

Frequently asked questions

What is CVE-2009-2121?
Buffer overflow in the browser kernel in Google Chrome before 2.0.172.33 allows remote HTTP servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted response.
How severe is CVE-2009-2121?
CVE-2009-2121 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2009-2121 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2121?
CVE-2009-2121 primarily affects Google Chrome. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-2121?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2009-2121 published?
CVE-2009-2121 was published on 2009-06-23 and last updated on 2026-06-16.

References

Affected products (24)

More vulnerabilities in Google Chrome

All CVEs affecting Google Chrome →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →