Is CVE-2011-3501 being actively exploited?

CVE-2011-3501 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-3501?

CVE-2011-3501 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2011-3501

MEDIUM · CVSS 5.0EPSS 2.9%EU EUVD

Integer overflow in Cogent DataHub 7.1.1.63 and earlier allows remote attackers to cause a denial of service (crash) via a negative or large Content-Length value.

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness (CWE): CWE-189
EPSS score: 2.9% (87th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-3464)
Published: September 16, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-3464 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

cogentdatahub / cogent datahub
cogentdatahub / cogent datahub
cogentdatahub / cogent datahub
cogentdatahub / cogent datahub
cogentdatahub / cogent datahub

References

http://aluigi.altervista.org/adv/cogent_3-adv.txt(Exploit)
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-256-03.pdf(US Government Resource)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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