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CVE-2011-3493

47
FAUCET Score

CVE-2011-3493 identifies multiple stack-based buffer overflows within the DH_OneSecondTick function of Cogent DataHub versions 7.1.1.63 and earlier. This vulnerability allows an unauthenticated remote attacker to trigger a denial of service or potentially execute arbitrary code by sending overly long 'domain', 'report_domain', 'register_datahub', or 'slave' commands. With a critical CVSS score of 10.0, this flaw is easily exploitable over the network with low complexity. While not currently listed on CISA's Known Exploited Vulnerabilities catalog, public exploit code is available on ExploitDB, and it remains on a "Hot List" indicating its continued risk and relevance.

Impacted Technologies

VendorProductVersion(s)CPE
<= 7.1.1.63CPE matchmatch criteria
cpe:2.3:a:cogentdatahub:cogent_datahub:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:a:cogentdatahub:cogent_datahub:7.0:*:*:*:*:*:*:*
7.0.2CPE matchmatch criteria
cpe:2.3:a:cogentdatahub:cogent_datahub:7.0.2:*:*:*:*:*:*:*
7.1.0CPE matchmatch criteria
cpe:2.3:a:cogentdatahub:cogent_datahub:7.1.0:*:*:*:*:*:*:*
7.1.1CPE matchmatch criteria
cpe:2.3:a:cogentdatahub:cogent_datahub:7.1.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
7.99%
Probability of exploitation in next 30 days
EPSS Percentile
94.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-17884 · Sep 22, 2011
This CVE's current EPSS score of 0.0799 is in the 90th 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

aluigi.altervista.org / adv/cogent_1-adv.txt
Exploit
us-cert.gov / control_systems/pdf/ICS-ALERT-11-256-03.pdf
US Government Resource