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NVD / CVE Program· CNA redhat

CVE-2020-25722: Multiple flaws were found in the way samba AD DC implemented access and conformance checking of stored data.

Noroxi assessment

Priority: Monitor (action score 35/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.6% (FIRST EPSS); higher than 76% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Azure Linux 3.0 ARM 4.18.3-1; Azure Linux 3.0 x64 4.18.3-1.
  • Mentioned 2 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Azure Linux 3.0 ARM 4.18.3-1; Azure Linux 3.0 x64 4.18.3-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Multiple flaws were found in the way samba AD DC implemented access and conformance checking of stored data. An attacker could use this flaw to cause total domain compromise.

HighCVSS 8.8 · v3.1—No exploit Fix available
Published
Feb 18, 2022
Updated
Jun 16, 2026
EPSS
1.6% · 76th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.6%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
sambasamba
debiandebian linux
fedoraprojectfedora
canonicalubuntu linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • canonical ubuntu linux18.04
  • canonical ubuntu linux20.04
  • canonical ubuntu linux21.04
  • canonical ubuntu linux21.10
  • debian debian linux10.0
  • debian debian linux9.0
  • fedoraproject fedora33
  • fedoraproject fedora34
  • fedoraproject fedora35
  • samba samba4.0.0 and later · before 4.13.14
  • samba samba4.15.0 and later · before 4.15.2
  • samba samba4.14.0 and later · before 4.14.10

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a samba

    • samba 4.15.2, samba 4.14.10, samba 4.13.14affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.13sambafrom 4.0.0 · before 4.13.17-r04.13.17-r0
Alpine:v3.14sambafrom 4.0.0 · before 4.14.12-r04.14.12-r0
Alpine:v3.15sambafrom 4.0.0 · before 4.15.2-r04.15.2-r0
Debian:11sambabefore 2:4.13.13+dfsg-1~deb11u22:4.13.13+dfsg-1~deb11u2
Debian:12sambabefore 2:4.13.14+dfsg-12:4.13.14+dfsg-1
openSUSE:Leap 15.3ldbbefore 2.2.2-3.3.12.2.2-3.3.1
openSUSE:Leap 15.3sambabefore 4.13.13+git.528.140935f8d6a-3.12.14.13.13+git.528.140935f8d6a-3.12.1
openSUSE:Tumbleweedsambabefore 4.15.2+git.193.a4d6307f1fd-1.14.15.2+git.193.a4d6307f1fd-1.1
SUSE:Enterprise Storage 7ldbbefore 2.2.2-4.6.12.2.2-4.6.1
SUSE:Enterprise Storage 7sambabefore 4.13.13+git.545.5897c2d94f3-3.12.14.13.13+git.545.5897c2d94f3-3.12.1
SUSE:Linux Enterprise Module for Basesystem 15 SP3ldbbefore 2.2.2-3.3.12.2.2-3.3.1
SUSE:Linux Enterprise Module for Basesystem 15 SP3sambabefore 4.13.13+git.528.140935f8d6a-3.12.14.13.13+git.528.140935f8d6a-3.12.1

Same product

samba: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-7494Samba since version 3.5.0 and before 4.6.4, 4.5.10 and 4.4.14 is vulnerable to remote code execution vulnerability, allowing a malicious…KEV
    99Now
  • CVE-2015-0240The Netlogon server implementation in smbd in Samba 3.5.x and 3.6.x before 3.6.25, 4.0.x before 4.0.25, 4.1.x before 4.1.17, and 4.2.x…
    66This week
  • CVE-2003-0085Buffer overflow in the SMB/CIFS packet fragment re-assembly code for SMB daemon (smbd) in Samba before 2.2.8, and Samba-TNG before 0.3.1…
    66This week

Published before and after this one in the same product

  • ← EarlierCVE-2020-25718Feb 18, 2022 · A flaw was found in the way samba, as an Active Directory Domain Controller, is able to support an RODC (read-only domain controller).
    36Monitor
  • ← EarlierCVE-2020-25719Feb 18, 2022 · A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication.
    29Monitor
  • Later →CVE-2021-44142Feb 21, 2022 · The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and…
    57Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Azure Linux 3.0 ARM4.18.3-1 · sambaMicrosoft (MSRC)
Azure Linux 3.0 x644.18.3-1 · sambaMicrosoft (MSRC)
alpine:samba4.13.17-r0 · Alpine:v3.13Package registry (OSV)
debian:samba2:4.13.14+dfsg-1 · Debian:12Package registry (OSV)
opensuse:ldb2.2.2-3.3.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:samba4.13.13+git.528.140935f8d6a-3.12.1 · openSUSE:Leap 15.3Package registry (OSV)
suse:ldb2.2.2-3.3.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP3Package registry (OSV)
suse:samba4.13.13+git.528.140935f8d6a-3.12.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP3Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-863 · Incorrect Authorization

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records