Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-j3sk-xvxc-9bea
Vulnerability ID VCID-j3sk-xvxc-9bea
Aliases CVE-2023-21808
GHSA-824j-wqm8-89mj
Summary Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') .NET and Visual Studio Remote Code Execution Vulnerability
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (5)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-416 Use After Free
CWE-20 Improper Input Validation
System Score Found at
cvssv3 7.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-21808.json
epss 0.01277 https://api.first.org/data/v1/epss?cve=CVE-2023-21808
epss 0.01277 https://api.first.org/data/v1/epss?cve=CVE-2023-21808
epss 0.01277 https://api.first.org/data/v1/epss?cve=CVE-2023-21808
epss 0.01277 https://api.first.org/data/v1/epss?cve=CVE-2023-21808
epss 0.01277 https://api.first.org/data/v1/epss?cve=CVE-2023-21808
epss 0.01277 https://api.first.org/data/v1/epss?cve=CVE-2023-21808
epss 0.01277 https://api.first.org/data/v1/epss?cve=CVE-2023-21808
epss 0.01277 https://api.first.org/data/v1/epss?cve=CVE-2023-21808
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-824j-wqm8-89mj
cvssv3.1 7.8 https://github.com/dotnet/runtime
generic_textual HIGH https://github.com/dotnet/runtime
cvssv3.1 7.8 https://github.com/dotnet/runtime/security/advisories/GHSA-824j-wqm8-89mj
cvssv3.1_qr HIGH https://github.com/dotnet/runtime/security/advisories/GHSA-824j-wqm8-89mj
generic_textual HIGH https://github.com/dotnet/runtime/security/advisories/GHSA-824j-wqm8-89mj
cvssv3.1 7.8 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21808
cvssv3.1 7.8 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21808
generic_textual HIGH https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21808
ssvc Track https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21808
cvssv3.1 7.8 https://nvd.nist.gov/vuln/detail/CVE-2023-21808
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2023-21808
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-21808.json
https://api.first.org/data/v1/epss?cve=CVE-2023-21808
https://github.com/dotnet/runtime
2183195 https://bugzilla.redhat.com/show_bug.cgi?id=2183195
CVE-2023-21808 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21808
CVE-2023-21808 https://nvd.nist.gov/vuln/detail/CVE-2023-21808
GHSA-824j-wqm8-89mj https://github.com/advisories/GHSA-824j-wqm8-89mj
GHSA-824j-wqm8-89mj https://github.com/dotnet/runtime/security/advisories/GHSA-824j-wqm8-89mj
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-21808.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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/dotnet/runtime
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:H/I:H/A:H Found at https://github.com/dotnet/runtime/security/advisories/GHSA-824j-wqm8-89mj
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:H/I:H/A:H Found at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21808
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:H/I:H/A:H/E:U/RL:O/RC:C Found at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21808
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:T/P:M/B:A/M:M/D:T/2025-02-28T20:23:13Z/ Found at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21808
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2023-21808
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 0.79513
EPSS Score 0.01277
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:50:53.726104+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/Microsoft.NETCore.App.Runtime.win-arm/CVE-2023-21808.yml 38.0.0