CVE-2011-4093

Integer overflow in inc/server.hpp in libnet6 (aka net6) before 1.3.14 might allow remote attackers to hijack connections and gain privileges as other users by making a large number of connections until the overflow occurs and an ID of another user is provided.

Published: 2014-02-10 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4093 is rated Moderate Risk (50.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.76%). EPSS rose +1.33% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-4093

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.43% 1.76% +1.33%
2 2025-03-30 0.49% 0.43% -0.06%
3 2025-03-29 — 0.49% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4093

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 4.9 [email protected]

Weakness enumeration for CVE-2011-4093

OS Trackers for CVE-2011-4093

vendor priority summary link
ubuntu medium CVE-2011-4093 medium priority: Ubuntu including 1 source packages (net6), 10 status rows across 10 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, upstream): ignored 5, not-affected 4, released 1. https://ubuntu.com/security/CVE-2011-4093

Affected software / configurations for CVE-2011-4093

Vendor Product Version Raw CPE
oracle solaris 11.2 cpe:2.3:o:oracle:solaris:11.2:*:*:*:*:*:*:*
armin_burgmeier net6 <= 1.3.13 cpe:2.3:a:armin_burgmeier:net6:*:*:*:*:*:*:*:*
armin_burgmeier net6 1.3.1 cpe:2.3:a:armin_burgmeier:net6:1.3.1:*:*:*:*:*:*:*
armin_burgmeier net6 1.3.2 cpe:2.3:a:armin_burgmeier:net6:1.3.2:*:*:*:*:*:*:*
armin_burgmeier net6 1.3.3 cpe:2.3:a:armin_burgmeier:net6:1.3.3:*:*:*:*:*:*:*
armin_burgmeier net6 1.3.4 cpe:2.3:a:armin_burgmeier:net6:1.3.4:*:*:*:*:*:*:*
armin_burgmeier net6 1.3.5 cpe:2.3:a:armin_burgmeier:net6:1.3.5:*:*:*:*:*:*:*
armin_burgmeier net6 1.3.6 cpe:2.3:a:armin_burgmeier:net6:1.3.6:*:*:*:*:*:*:*
armin_burgmeier net6 1.3.7 cpe:2.3:a:armin_burgmeier:net6:1.3.7:*:*:*:*:*:*:*
armin_burgmeier net6 1.3.8 cpe:2.3:a:armin_burgmeier:net6:1.3.8:*:*:*:*:*:*:*
armin_burgmeier net6 1.3.9 cpe:2.3:a:armin_burgmeier:net6:1.3.9:*:*:*:*:*:*:*
armin_burgmeier net6 1.3.10 cpe:2.3:a:armin_burgmeier:net6:1.3.10:*:*:*:*:*:*:*
armin_burgmeier net6 1.3.11 cpe:2.3:a:armin_burgmeier:net6:1.3.11:*:*:*:*:*:*:*
armin_burgmeier net6 1.3.12 cpe:2.3:a:armin_burgmeier:net6:1.3.12:*:*:*:*:*:*:*
opensuse opensuse 11.3 cpe:2.3:o:opensuse:opensuse:11.3:*:*:*:*:*:*:*
opensuse_project opensuse 11.4 cpe:2.3:o:opensuse_project:opensuse:11.4:*:*:*:*:*:*:*

References for CVE-2011-4093

cvelogic Threat Intelligence