CVE-2011-4191

Exp

Stack-based buffer overflow in the xdrDecodeString function in XNFS.NLM in Novell NetWare 6.5 SP8 allows remote attackers to execute arbitrary code or cause a denial of service (abend or NFS outage) via long packets.

Published: 2011-11-30 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4191 is rated High Exploit Risk (73.9/100): CVSS High severity, with high exploitation likelihood (EPSS 33.26%, 97th percentile). 3 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-2011-4191

EDB-ID Source Kind Published Link
18351 exploit_db edb 2012-01-10 Exploit-DB ↗
18328 exploit_db edb 2012-01-06 Exploit-DB ↗
18327 exploit_db edb 2012-01-06 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2011-4191

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 2026-06-01 38.86% 33.26% -5.61%
2 2026-03-19 42.45% 38.86% -3.58%
3 2026-01-04 — 42.45% —

Full EPSS history (31 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4191

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P 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:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2011-4191

Affected software / configurations for CVE-2011-4191

Vendor Product Version Raw CPE
novell netware 6.5 cpe:2.3:o:novell:netware:6.5:sp8:*:*:*:*:*:*

References for CVE-2011-4191

cvelogic Threat Intelligence