Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2015-0240

89
FAUCET Score

CVE-2015-0240 is a critical remote code execution vulnerability affecting Samba versions 3.5.x, 3.6.x, 4.0.x, 4.1.x, and 4.2.x. This flaw allows unauthenticated remote attackers to execute arbitrary code by sending specially crafted Netlogon packets that trigger a free operation on an uninitialized stack pointer. With a CVSS score of 10.0, this vulnerability is easily exploitable over the network with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While not listed in CISA KEV, exploit modules are publicly available in Metasploit, and it has garnered significant community discussion and media coverage, indicating high awareness and potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
5CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:5:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
3.5.0CPE matchmatch criteria
cpe:2.3:a:samba:samba:3.5.0:*:*:*:*:*:*:*
3.5.1CPE matchmatch criteria
cpe:2.3:a:samba:samba:3.5.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
87.64%
Probability of exploitation in next 30 days
EPSS Percentile
99.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-36741 · Apr 13, 2015
This CVE's current EPSS score of 0.8764 is in the 100th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

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 (14)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: samba3x-0:3.6.23-9.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5.6 Long LifeFixed in: samba3x-0:3.5.4-0.70.el5_6.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5.9 Extended Update SupportFixed in: samba3x-0:3.6.6-0.131.el5_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: samba4-0:4.0.0-66.el6_6.rc4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: samba-0:3.6.23-14.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.2 Advanced Update SupportFixed in: samba-0:3.5.10-119.el6_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.4 Extended Update SupportFixed in: samba-0:3.6.9-151.el6_4.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.4 Extended Update SupportFixed in: samba4-0:4.0.0-57.el6_4.rc4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.5 Extended Update SupportFixed in: samba-0:3.6.9-171.el6_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.5 Extended Update SupportFixed in: samba4-0:4.0.0-65.el6_5.rc4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: samba-0:4.1.1-38.el7_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Storage 2.1Fixed in: samba-0:3.6.9-167.10.3.el6rhs
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Storage 3 for RHEL 6Fixed in: samba-0:3.6.509-169.6.el6rhs
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux Extended Update Support 5.6Fixed in: samba3x

Vendor Advisories (1)

redhatCVE-2015-0240Critical

samba: talloc free on uninitialized stack pointer in netlogon server could lead to remote-code execution

Feb 23, 2015

References

security.netapp.com / advisory/ntap-20250509-0001
advisories.mageia.org / MGASA-2015-0084.html
lists.opensuse.org / opensuse-security-announce/2015-02/msg00028.html
lists.opensuse.org / opensuse-security-announce/2015-02/msg00030.html
lists.opensuse.org / opensuse-security-announce/2015-02/msg00031.html
lists.opensuse.org / opensuse-security-announce/2015-02/msg00035.html
lists.opensuse.org / opensuse-security-announce/2016-04/msg00042.html
lists.opensuse.org / opensuse-security-announce/2016-04/msg00047.html
lists.opensuse.org / opensuse-security-announce/2016-04/msg00048.html
marc.info
marc.info
rhn.redhat.com / errata/RHSA-2015-0249.html
rhn.redhat.com / errata/RHSA-2015-0250.html
rhn.redhat.com / errata/RHSA-2015-0251.html
rhn.redhat.com / errata/RHSA-2015-0252.html
rhn.redhat.com / errata/RHSA-2015-0253.html
rhn.redhat.com / errata/RHSA-2015-0254.html
rhn.redhat.com / errata/RHSA-2015-0255.html
rhn.redhat.com / errata/RHSA-2015-0256.html
rhn.redhat.com / errata/RHSA-2015-0257.html
access.redhat.com / articles/1346913
bugzilla.redhat.com / show_bug.cgi
security.gentoo.org / glsa/glsa-201502-15.xml
securityblog.redhat.com / 2015/02/23/samba-vulnerability-cve-2015-0240
Exploit
support.lenovo.com / product_security/samba_remote_vuln
support.lenovo.com / us/en/product_security/samba_remote_vuln
exploit-db.com / exploits/36741
samba.org / samba/security/CVE-2015-0240
Vendor Advisory
debian.org / security/2015/dsa-3171
mandriva.com / security/advisories
mandriva.com / security/advisories
oracle.com / technetwork/topics/security/bulletinjan2015-2370101.html
securityfocus.com / bid/72711
securitytracker.com / id/1031783
slackware.com / security/viewer.php
ubuntu.com / usn/USN-2508-1