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Vulnerability details: VCID-mey3-3w33-qyfq
Vulnerability ID VCID-mey3-3w33-qyfq
Aliases CVE-2021-43896
Summary Authentication Bypass by Spoofing Microsoft PowerShell Spoofing Vulnerability
Status Published
Exploitability 0.5
Weighted Severity 5.0
Risk 2.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
epss 0.03313 https://api.first.org/data/v1/epss?cve=CVE-2021-43896
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-43896
cvssv3.1 5.5 https://nvd.nist.gov/vuln/detail/CVE-2021-43896
cvssv3.1 5.5 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43896
ssvc Track https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43896
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-43896
cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:powershell:7.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:microsoft:powershell:7.2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:cbl_mariner:1.0:*:*:*:*:*:*:arm https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:microsoft:cbl_mariner:1.0:*:*:*:*:*:*:arm
cpe:2.3:o:microsoft:cbl_mariner:1.0:*:*:*:*:*:*:x64 https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:microsoft:cbl_mariner:1.0:*:*:*:*:*:*:x64
CVE-2021-43896 https://nvd.nist.gov/vuln/detail/CVE-2021-43896
CVE-2021-43896 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43896
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-43896
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:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-43896
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:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43896
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: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-07-18T15:48:49Z/ Found at https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43896
Exploit Prediction Scoring System (EPSS)
Percentile 0.8676
EPSS Score 0.03313
Published At Sept. 9, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T09:25:28.203082+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/PowerShell/CVE-2021-43896.yml 37.0.0