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Vulnerability details: VCID-3gsq-ragz-n3b8
Vulnerability ID VCID-3gsq-ragz-n3b8
Aliases CVE-2020-14303
Summary A flaw was found in the AD DC NBT server in all Samba versions before 4.10.17, before 4.11.11 and before 4.12.4. A samba user could send an empty UDP packet to cause the samba server to crash.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-834 Excessive Iteration
CWE-400 Uncontrolled Resource Consumption
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-14303.json
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
epss 0.16342 https://api.first.org/data/v1/epss?cve=CVE-2020-14303
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2020-14303
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-14303
archlinux High https://security.archlinux.org/AVG-1202
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00030.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00054.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00002.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-14303.json
https://api.first.org/data/v1/epss?cve=CVE-2020-14303
https://bugzilla.redhat.com/show_bug.cgi?id=1851298%3B
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14303
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6YLNQ5GRXUKYRUAOFZ4DUBVN4SMTL6Q2/
https://security.gentoo.org/glsa/202007-15
https://security.netapp.com/advisory/ntap-20200709-0003/
https://www.samba.org/samba/security/CVE-2020-14303.html
1851298 https://bugzilla.redhat.com/show_bug.cgi?id=1851298
AVG-1202 https://security.archlinux.org/AVG-1202
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
CVE-2020-14303 https://nvd.nist.gov/vuln/detail/CVE-2020-14303
USN-4454-1 https://usn.ubuntu.com/4454-1/
USN-4454-2 https://usn.ubuntu.com/4454-2/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-14303.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-14303
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-14303
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.94579
EPSS Score 0.16342
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:36:53.740875+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/4454-2/ 37.0.0