CVE-2011-5227

Exp

Stack-based buffer overflow in the Syslog service (nssyslogd.exe) in Enterasys Network Management Suite (NMS) before 4.1.0.80 allows remote attackers to execute arbitrary code via a long PRIO field in a message to UDP port 514.

Published: 2012-10-25 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-5227 is rated High Exploit Risk (86.3/100): CVSS Critical severity, with high exploitation likelihood (EPSS 78.00%, 99th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2011-5227

EDB-ID Source Kind Published Link
23887 exploit_db edb 2013-01-04 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2011-5227

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 2026-03-02 81.40% 78.00% -3.40%
2 2026-02-13 78.00% 81.40% +3.40%
3 2025-03-30 — 78.00% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-5227

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2011-5227

Affected software / configurations for CVE-2011-5227

Vendor Product Version Raw CPE
enterasys netsight <= 4.1.0.79 cpe:2.3:a:enterasys:netsight:*:*:*:*:*:*:*:*
enterasys netsight <= 4.1.0.79 cpe:2.3:h:enterasys:netsight:*:*:*:*:*:*:*:*

References for CVE-2011-5227

cvelogic Threat Intelligence