Is CVE-2016-2110 in the CISA KEV catalog?

No. CVE-2016-2110 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-2110?

CVE-2016-2110 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2016-2110?

CVE-2016-2110 has an EPSS score of 8.30% (94th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-2110?

Upgrade samba on debian 11 to 2:4.3.7+dfsg-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2016-2110

MEDIUMEPSS 94th pctl

5.9

CVSS v3

NVD

Description

The NTLMSSP authentication implementation in Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 allows man-in-the-middle attackers to perform protocol-downgrade attacks by modifying the client-server data stream to remove application-layer flags or encryption settings, as demonstrated by clearing the NTLMSSP_NEGOTIATE_SEAL or NTLMSSP_NEGOTIATE_SIGN option to disrupt LDAP security.

CWE-254

How to fix

Remediation Available

sambaDebian

Fixed in:2:4.3.7+dfsg-1CVE-2016-2110

sambaUbuntu

Fixed in:2:4.3.8+dfsg-0ubuntu0.14.04.2USN-2950-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploit Intelligence

8.30%probability of exploitation in 30 days

94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.