How severe is CVE-2011-3493?

CVE-2011-3493 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2011-3493 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3493?

CVE-2011-3493 primarily affects Cogentdatahub Cogent Datahub. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3493?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2011-3493 published?

CVE-2011-3493 was published on 2011-09-16 and last updated on 2026-06-16.

CVE-2011-3493

CVE-2011-3493 is a critical-severity vulnerability in Cogentdatahub Cogent Datahub with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Cogentdatahub Cogent Datahub
Published: 2011-09-16
Last modified: 2026-06-16

Description

Multiple stack-based buffer overflows in the DH_OneSecondTick function in Cogent DataHub 7.1.1.63 and earlier allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via long (1) domain, (2) report_domain, (3) register_datahub, or (4) slave commands.

Frequently asked questions

What is CVE-2011-3493?: Multiple stack-based buffer overflows in the DH_OneSecondTick function in Cogent DataHub 7.1.1.63 and earlier allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via long (1) domain, (2) report_domain, (3) register_datahub, or (4) slave commands.
How severe is CVE-2011-3493?: CVE-2011-3493 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2011-3493 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3493?: CVE-2011-3493 primarily affects Cogentdatahub Cogent Datahub. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3493?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2011-3493 published?: CVE-2011-3493 was published on 2011-09-16 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:a:cogentdatahub:cogent_datahub:*:*:*:*:*:*:*:*
cpe:2.3:a:cogentdatahub:cogent_datahub:7.0:*:*:*:*:*:*:*
cpe:2.3:a:cogentdatahub:cogent_datahub:7.0.2:*:*:*:*:*:*:*
cpe:2.3:a:cogentdatahub:cogent_datahub:7.1.0:*:*:*:*:*:*:*
cpe:2.3:a:cogentdatahub:cogent_datahub:7.1.1:*:*:*:*:*:*:*

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