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Vulnerability details: VCID-we9h-xchf-aaam
Vulnerability ID VCID-we9h-xchf-aaam
Aliases CVE-2020-25721
Summary Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now provides a way for Linux applications to obtain a reliable SID (and samAccountName) in issued tickets.
Status Published
Exploitability 0.5
Weighted Severity 7.9
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-20 Improper Input Validation
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-25721.html
cvssv3 7.6 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-25721.json
epss 0.00184 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
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epss 0.00184 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
epss 0.00184 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
epss 0.00184 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
epss 0.00184 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
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epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
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epss 0.00423 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
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epss 0.00460 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
epss 0.00460 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
epss 0.00460 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
epss 0.00513 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
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epss 0.00513 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
epss 0.00513 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
epss 0.00513 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
epss 0.00513 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
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epss 0.00513 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
epss 0.00513 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
epss 0.00513 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
epss 0.00513 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
epss 0.00513 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
epss 0.01359 https://api.first.org/data/v1/epss?cve=CVE-2020-25721
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=2021728
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2124
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25717
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25718
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25719
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25721
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25722
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23192
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3738
cvssv3.1 7.6 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 6.5 https://nvd.nist.gov/vuln/detail/CVE-2020-25721
cvssv3 8.8 https://nvd.nist.gov/vuln/detail/CVE-2020-25721
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2020-25721
archlinux Medium https://security.archlinux.org/AVG-2538
generic_textual Medium https://ubuntu.com/security/notices/USN-5142-1
generic_textual Medium https://www.samba.org/samba/history/samba-4.13.14.html
generic_textual Medium https://www.samba.org/samba/security/CVE-2020-25721.html
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-25721.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-25721.json
https://api.first.org/data/v1/epss?cve=CVE-2020-25721
https://bugzilla.samba.org/show_bug.cgi?id=14725
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2124
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25717
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25718
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25719
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25721
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25722
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23192
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3738
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://security.gentoo.org/glsa/202309-06
https://ubuntu.com/security/notices/USN-5142-1
https://www.samba.org/samba/history/samba-4.13.14.html
https://www.samba.org/samba/security/CVE-2020-25721.html
2021728 https://bugzilla.redhat.com/show_bug.cgi?id=2021728
AVG-2538 https://security.archlinux.org/AVG-2538
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:*:*:*:*:*:*:*:*
CVE-2020-25721 https://nvd.nist.gov/vuln/detail/CVE-2020-25721
USN-5142-1 https://usn.ubuntu.com/5142-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-25721.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:L/UI:N/S:U/C:L/I:L/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:S/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-25721
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:L/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-25721
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:L/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-25721
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 0.40818
EPSS Score 0.00184
Published At June 5, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.