No exploitation reportedFix available

CVE-2020-25719

Q: Is CVE-2020-25719 actively exploited?

Active exploitation of CVE-2020-25719 has not been confirmed. Its EPSS score was 1.7% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2020-25719?

CVE-2020-25719 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2022-02-18
WeaknessCWE-287 · CWE-362

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.

Timeline

dates in UTC

2022-02-1818:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-25719?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-25719?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Canonical ubuntu linux

Branch	Affected	Fixed in	Source
20.4	= 20.04	no fix published	NVD
21.4	= 21.04	no fix published	NVD
21.10	= 21.10	no fix published	NVD

Fedoraproject fedora

Branch	Affected	Fixed in	Source
33.x	= 33	no fix published	NVD
34.x	= 34	no fix published	NVD
35.x	= 35	no fix published	NVD

Samba

Branch	Affected	Fixed in	Source
4.15	≥ 4.15.0, < 4.15.2	4.15.2	NVD
4.14	≥ 4.14.0, < 4.14.10	4.14.10	NVD
4.x	≥ 4.0.0, < 4.13.14	4.13.14	NVD

14 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

bind-dyndb-ldapAlmaLinux:8all versions · fixed in 11.6-2.module_el8.5.0+2603+92118e57
custodiaAlmaLinux:8all versions · fixed in 0.6.0-3.module_el8.5.0+2603+92118e57and 1 other package
custodiaAlmaLinux:8all versions · fixed in 0.6.0-3.module_el8.6.0+2881+2f24dc92and 1 other package
ipa-clientAlmaLinux:8all versions · fixed in 4.9.6-10.module_el8.5.0+2603+92118e57and 14 other packages
ipa-healthcheckAlmaLinux:8all versions · fixed in 0.7-6.module_el8.5.0+2603+92118e57and 1 other package
opendnssecAlmaLinux:8all versions · fixed in 2.1.7-1.module_el8.5.0+2603+92118e57
opendnssecAlmaLinux:8all versions · fixed in 2.1.7-1.module_el8.6.0+2881+2f24dc92
python3-jwcryptoAlmaLinux:8all versions · fixed in 0.5.0-1.module_el8.5.0+2603+92118e57

17 more package ranges on OSV.dev

Full record on NVD

Fix

Advisories and patches

bugzilla.redhat.comPatch
www.samba.orgMitigation · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.2read 2026-10-23
NVDCVSS 2.09read 2026-10-23
CNAweakness (CWE)CWE-287read 2026-10-23
NVDweakness (CWE)CWE-362read 2026-10-23
FIRST EPSSEPSS score1.7 %2026-10-22
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published: 2022-02-18
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-25719?

Is CVE-2020-25719 actively exploited?

Active exploitation of CVE-2020-25719 has not been confirmed. Its EPSS score was 1.7% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-25719?

CVE-2020-25719 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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