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CVE-2009-2121

25
FAUCET Score

CVE-2009-2121 describes a critical buffer overflow vulnerability in Google Chrome versions prior to 2.0.172.33, specifically within its browser kernel. This flaw allows remote HTTP servers to trigger a denial of service or potentially execute arbitrary code on affected systems through a specially crafted response. With a CVSS score of 9.3, this vulnerability is highly severe, requiring medium attack complexity but offering complete confidentiality, integrity, and availability impacts. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.0.172CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
0.2.149.29CPE matchmatch criteria
cpe:2.3:a:google:chrome:0.2.149.29:*:*:*:*:*:*:*
0.2.149.30CPE matchmatch criteria
cpe:2.3:a:google:chrome:0.2.149.30:*:*:*:*:*:*:*
0.2.152.1CPE matchmatch criteria
cpe:2.3:a:google:chrome:0.2.152.1:*:*:*:*:*:*:*
0.2.153.1CPE matchmatch criteria
cpe:2.3:a:google:chrome:0.2.153.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.02%
Probability of exploitation in next 30 days
EPSS Percentile
78.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0202 is in the 36th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

code.google.com / p/chromium/issues/detail
Exploit
googlechromereleases.blogspot.com / 2009/06/stable-beta-update-security-fix.html
osvdb.org / 55278
secunia.com / advisories/35548
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/51307
securityfocus.com / bid/35462
securitytracker.com / id
vupen.com / english/advisories/2009/1656