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CVE-2018-10918

24
FAUCET Score

CVE-2018-10918 describes a null pointer dereference vulnerability in Samba versions prior to 4.7.9 and 4.8.4, specifically affecting Samba servers configured as Active Directory Domain Controllers. An authenticated attacker can exploit this flaw to trigger a denial of service, crashing the Samba server. With a CVSS score of 6.5 (Medium), this vulnerability has a low attack complexity and requires low privileges, but its impact is limited to availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
>= 4.7.0, < 4.7.9CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
>= 4.8.0, < 4.8.4CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.2MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.5
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.55%
Probability of exploitation in next 30 days
EPSS Percentile
83.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0255 is in the 94th percentile among its peer group of 21,958 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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2018-10918Moderate

samba: DsCrackNames on a user without an SPN can trigger NULL-pointer de-reference

Aug 16, 2018

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
security.gentoo.org / glsa/202003-52
security.netapp.com / advisory/ntap-20180814-0001
Third Party Advisory
usn.ubuntu.com / 3738-1
Third Party Advisory
samba.org / samba/security/CVE-2018-10918.html
PatchVendor Advisory
securityfocus.com / bid/105083
Third Party AdvisoryVDB Entry