How severe is CVE-2011-4191?

CVE-2011-4191 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2011-4191 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4191?

CVE-2011-4191 affects Novell Netware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-4191?

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

When was CVE-2011-4191 published?

CVE-2011-4191 was published on 2011-11-30 and last updated on 2026-06-16.

CVE-2011-4191

CVE-2011-4191 is a high-severity vulnerability in Novell Netware with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 10% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Novell Netware
Published: 2011-11-30
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2011-4191?: 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.
How severe is CVE-2011-4191?: CVE-2011-4191 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2011-4191 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4191?: CVE-2011-4191 affects Novell Netware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-4191?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2011-4191 published?: CVE-2011-4191 was published on 2011-11-30 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:novell:netware:6.5:sp8:*:*:*:*:*:*

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