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CVE-2020-25717

A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation.
An official patch is available. Apply the patch as soon as possible.
8.1
CVSS
6.7
ShadowTrackr
NO
CISA KEV
-
NCSC.nl
CVSS v4.0 Metrics
Exploitability
Attack VectorNetwork
ComplexityLow
RequirementsPresent
PrivilegesLow
User InteractionNone
Threat
Exploit MaturityPoC
Vulnerable System
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
Subsequent System
ConfidentialityNone
IntegrityNone
AvailabilityNone
Supplemental
SafetyNegligible
AutomatableYes
RecoveryAutomatic
Value DensityConcentrated
UrgencyMedium
Patch StatusOfficial Patch

Change Log
DateSourceChangesScore
2026-07-21PoCE: U→P4.9 → 6.7
2026-07-21nvdAV: P→N, AC: H→L, PR: H→L, UI: A→N, VC: N→H, VI: N→H0.0 → 4.9
2026-07-21nvdpatch: Unavailable→Official Patch0.0 → 0.0
2026-07-21cve.orginitial, patch: Unavailable0.0
References: CVE.org · NVD · PoC

Affected Software
VendorProductVersion
canonicalubuntu_linux18.04
canonicalubuntu_linux20.04
canonicalubuntu_linux21.04
canonicalubuntu_linux21.10
debiandebian_linux10.0
debiandebian_linux9.0
fedoraprojectfedora33
fedoraprojectfedora34
fedoraprojectfedora35
n/asambasamba 4.15.2, samba 4.14.10, samba 4.13.14
redhatcodeready_linux_builderAll versions
redhatenterprise_linux7.0
redhatenterprise_linux8.0
redhatenterprise_linux_desktop7.0
redhatenterprise_linux_eus8.2
redhatenterprise_linux_eus8.4
redhatenterprise_linux_for_ibm_z_systems7.0
redhatenterprise_linux_for_ibm_z_systems8.0
redhatenterprise_linux_for_ibm_z_systems_eus8.2
redhatenterprise_linux_for_ibm_z_systems_eus8.4
redhatenterprise_linux_for_power_big_endian7.0
redhatenterprise_linux_for_power_little_endian7.0
redhatenterprise_linux_for_power_little_endian8.0
redhatenterprise_linux_for_power_little_endian_eus8.2
redhatenterprise_linux_for_power_little_endian_eus8.4
redhatenterprise_linux_for_scientific_computing7.0
redhatenterprise_linux_resilient_storage7.0
redhatenterprise_linux_server7.0
redhatenterprise_linux_server_aus8.2
redhatenterprise_linux_server_aus8.4
redhatenterprise_linux_server_tus8.4
redhatenterprise_linux_server_update_services_for_sap_solutions8.2
redhatenterprise_linux_server_update_services_for_sap_solutions8.4
redhatenterprise_linux_tus8.2
redhatenterprise_linux_workstation7.0
redhatgluster_storage3.0
redhatgluster_storage3.5
redhatopenstack13
redhatopenstack16.1
redhatopenstack16.2
redhatvirtualization4.0
redhatvirtualization_host4.0
sambasamba≥ 3.0.0, < 4.13.14
sambasamba≥ 4.14.0, < 4.14.10
sambasamba≥ 4.15.0, < 4.15.2
Published: 2022-02-18