How severe is CVE-2011-1786?

CVE-2011-1786 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-1786 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1786?

CVE-2011-1786 primarily affects Likewise Likewise Open. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-1786?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-1786 published?

CVE-2011-1786 was published on 2011-05-03 and last updated on 2026-06-16.

CVE-2011-1786

CVE-2011-1786 is a medium-severity vulnerability in Likewise Likewise Open 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-399.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Likewise Likewise Open
Published: 2011-05-03
Last modified: 2026-06-16

Description

lsassd in Likewise Open /Enterprise 5.3 before build 7845, Open 6.0 before build 8325, and Enterprise 6.0 before build 178, as distributed in VMware ESXi 4.1 and ESX 4.1 and possibly other products, allows remote attackers to cause a denial of service (daemon crash) via an Active Directory login attempt that provides a username containing an invalid byte sequence.

Frequently asked questions

What is CVE-2011-1786?: lsassd in Likewise Open /Enterprise 5.3 before build 7845, Open 6.0 before build 8325, and Enterprise 6.0 before build 178, as distributed in VMware ESXi 4.1 and ESX 4.1 and possibly other products, allows remote attackers to cause a denial of service (daemon crash) via an Active Directory login attempt that provides a username containing an invalid byte sequence.
How severe is CVE-2011-1786?: CVE-2011-1786 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-1786 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-1786?: CVE-2011-1786 primarily affects Likewise Likewise Open. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-1786?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-1786 published?: CVE-2011-1786 was published on 2011-05-03 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:a:likewise:likewise_open:5.3:*:enterprise:*:*:*:*:*
cpe:2.3:a:likewise:likewise_open:6.0:*:*:*:*:*:*:*
cpe:2.3:a:likewise:likewise_open:6.0:*:enterprise:*:*:*:*:*
cpe:2.3:a:vmware:esx:4.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:esxi:4.1:*:*:*:*:*:*:*

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