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CVE-2018-1140

27
FAUCET Score

CVE-2018-1140 describes a missing input sanitization flaw in the LDP database of Samba's LDAP server, affecting all Samba versions from 4.8.0 onwards when used as an Active Directory Domain Controller. This vulnerability has a CVSS score of 6.5 (Medium), indicating it can be exploited by an unauthenticated attacker on the adjacent network to cause a denial of service. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.8.0, < 4.8.4CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
10.84%
Probability of exploitation in next 30 days
EPSS Percentile
95.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.1084 is in the 99th percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2018-1140Moderate

libldb: LDAP server crash via distinguishedName

Aug 16, 2018

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
bugzilla.samba.org / show_bug.cgi
Issue TrackingPatchThird Party Advisory
security.gentoo.org / glsa/202003-52
security.netapp.com / advisory/ntap-20180814-0001
Third Party Advisory
samba.org / samba/security/CVE-2018-1140.html
PatchVendor Advisory
securityfocus.com / bid/105082
Third Party AdvisoryVDB Entry