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CVE-2009-3586

33
FAUCET Score

CVE-2009-3586 describes an off-by-one error in CoreHTTP 0.5.3.1 and earlier, specifically in src/http.c, affecting the frank_yaul corehttp product. This vulnerability has a CVSS score of 7.5 (High), indicating a network-exploitable flaw with low attack complexity that can lead to partial confidentiality, integrity, and availability impacts, including denial of service or arbitrary code execution. While not actively exploited in the wild and not on CISA's KEV catalog, public exploit code exists on ExploitDB, and it has a high FAUCET Risk Score of 93/100 despite minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
0.5.3.1CPE matchmatch criteria
cpe:2.3:a:frank_yaul:corehttp:0.5.3.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
6.39%
Probability of exploitation in next 30 days
EPSS Percentile
92.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-10349 · Dec 2, 2009
This CVE's current EPSS score of 0.0639 is in the 88th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

census-labs.com / media/corex.txt
ExploitPatch
census-labs.com / news/2009/12/02/corehttp-web-server
Exploit
securityfocus.com / archive/1/508272/100/0/threaded