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CVE-2009-1209

40
FAUCET Score

CVE-2009-1209 describes a critical stack-based buffer overflow vulnerability in W3C Amaya Web Browser version 11.1. This flaw allows remote attackers to execute arbitrary code by supplying a specially crafted script tag containing an excessively long "defer" attribute. With a CVSS score of 9.3, this vulnerability is highly severe, requiring moderate attack complexity but offering complete compromise of confidentiality, integrity, and availability. While not listed on CISA's KEV catalog, exploit code and proof-of-concept examples are publicly available on ExploitDB, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
11.1CPE matchmatch criteria
cpe:2.3:a:w3:amaya:11.1:*:*:*:*:*:*:*

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
12.37%
Probability of exploitation in next 30 days
EPSS Percentile
95.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-9330 · Aug 3, 2009
This CVE's current EPSS score of 0.1237 is in the 78th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 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

secunia.com / advisories/34531
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/47399
exploit-db.com / exploits/8314
exploit-db.com / exploits/8321
securityfocus.com / bid/34295
Exploit
vupen.com / english/advisories/2009/0889