CVE-2019-3880

A flaw was found in the way samba implemented an RPC endpoint emulating the Windows registry service API. An unprivileged attacker could use this flaw to create a new registry hive file anywhere they have unix permissions which could lead to creation of a new file in the Samba share. Versions before 4.8.11, 4.9.6 and 4.10.2 are vulnerable.

Published: 2019-04-09 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-3880 is rated Moderate Risk (52/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.39%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-3880

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-01-23 3.45% 3.39% -0.06%
2 2026-01-16 3.74% 3.45% -0.28%
3 2025-11-30 — 3.74% —

Full EPSS history (27 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-3880

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.4 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 2.8 2.5 [email protected]
4.2 3.0 MEDIUM
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 1.6 2.5 [email protected]
5.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 4.9 [email protected]

Weakness enumeration for CVE-2019-3880

OS Trackers for CVE-2019-3880

vendor priority summary link
alpine medium CVE-2019-3880: 1 source package rows (samba); 40 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 30. https://security.alpinelinux.org/vuln/CVE-2019-3880
debian not yet assigned CVE-2019-3880 not yet assigned priority: Debian including 1 source packages (samba), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2019-3880
redhat medium — https://access.redhat.com/security/cve/CVE-2019-3880
suse medium CVE-2019-3880 severity moderate: SUSE including 1895 source package names (0.0.17-1.1:libtasn1-4.13-4.2.1, 0.0.17-1.1:libtasn1-6-4.13-4.2.1, …), 4469 product×package rows across 522 product lines (Container bci/kiwi, Container bci/openjdk, … (522 product lines)): Fixed 3923, Known Not Affected 389, Known Affected 157. https://www.suse.com/security/cve/CVE-2019-3880/
ubuntu medium CVE-2019-3880 medium priority: Ubuntu including 1 source packages (samba), 5 status rows across 5 suites (bionic, cosmic, trusty, upstream, xenial): released 5. https://ubuntu.com/security/CVE-2019-3880

Affected software / configurations for CVE-2019-3880

Vendor Product Version Raw CPE
samba samba >= 3.2.0, < 4.8.11 cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
samba samba >= 4.9.0, < 4.9.6 cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
samba samba >= 4.10.0, < 4.10.2 cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
redhat gluster_storage 3.0 cpe:2.3:a:redhat:gluster_storage:3.0:*:*:*:*:*:*:*
redhat enterprise_linux 7.0 cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
fedoraproject fedora 28 cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*
fedoraproject fedora 29 cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
fedoraproject fedora 30 cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
opensuse leap 42.3 cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*

References for CVE-2019-3880

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00050.html Mailing List Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00106.html Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1966 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1967 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2099 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3582 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3880 Issue Tracking Mitigation Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/04/msg00013.html Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6354GALK73CZWQKFUG7AWB6EIEGFMF62/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HSRLRO7BPRFETVFZ4TVJL2VFZEPHKJY4/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTJVFA3RZ6G2IZDTVKLHRMX6QBYA4GPA/
https://security.netapp.com/advisory/ntap-20190411-0004/ Third Party Advisory
https://support.f5.com/csp/article/K20804356 Third Party Advisory
https://www.samba.org/samba/security/CVE-2019-3880.html Mitigation Patch Vendor Advisory
https://www.synology.com/security/advisory/Synology_SA_19_15 Third Party Advisory
https://access.redhat.com/security/cve/cve-2019-3880 Mitigation Third Party Advisory
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