CVE-2011-4091

CVE-2011-4091 is a medium-severity vulnerability in Armin Burgmeier Net6 with a CVSS 2.0 base score of 5.0. 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-287.

Key facts

Description

The libobby server in inc/server.hpp in libnet6 (aka net6) before 1.3.14 does not perform authentication before checking the user name, which allows remote attackers to obtain sensitive information such as server-usage patterns by a particular user and color preferences.

Frequently asked questions

What is CVE-2011-4091?
The libobby server in inc/server.hpp in libnet6 (aka net6) before 1.3.14 does not perform authentication before checking the user name, which allows remote attackers to obtain sensitive information such as server-usage patterns by a particular user and color preferences.
How severe is CVE-2011-4091?
CVE-2011-4091 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-4091 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4091?
CVE-2011-4091 primarily affects Armin Burgmeier Net6. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-4091?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-4091 published?
CVE-2011-4091 was published on 2014-02-10 and last updated on 2026-06-16.

References

Affected products (16)

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