CVE-2018-10858
A heap-buffer overflow was found in the way samba clients processed extra long filename in a directory listing.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.30%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A heap-buffer overflow was found in the way samba clients processed extra long filename in a directory listing. A malicious samba server could use this flaw to cause arbitrary code execution on a samba client. Samba versions before 4.6.16, 4.7.9 and 4.8.4 are vulnerable.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.30% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20, CWE-119
- Affected
- debian/debian linux · canonical/ubuntu linux · samba/samba · redhat/virtualization · redhat/virtualization host · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux workstation
- Source
- secalert@redhat.com
EPSS 4.3% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/105085Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1042002Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2612Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2613Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3056Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3470Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10858Issue Tracking, Third Party Advisory
- https://kc.mcafee.com/corporate/index?page=content&id=SB10284
- https://security.gentoo.org/glsa/202003-52
- https://security.netapp.com/advisory/ntap-20180814-0001/Third Party Advisory
- https://usn.ubuntu.com/3738-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4271Third Party Advisory
- https://www.samba.org/samba/security/CVE-2018-10858.htmlVendor Advisory
- http://www.securityfocus.com/bid/105085Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1042002Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2612Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2613Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3056Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3470Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10858Issue Tracking, Third Party Advisory
- https://kc.mcafee.com/corporate/index?page=content&id=SB10284
- https://security.gentoo.org/glsa/202003-52
- https://security.netapp.com/advisory/ntap-20180814-0001/Third Party Advisory
- https://usn.ubuntu.com/3738-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4271Third Party Advisory
- https://www.samba.org/samba/security/CVE-2018-10858.htmlVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.