CVE-2023-21803

Windows iSCSI Discovery Service Remote Code Execution Vulnerability

CVE-2023-21803 is fixed in 8 products on 1 platform, first by KB5022838, released February 14, 2023. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent

CVSS

9.8

Critical

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0177

78th percentile

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows 10 Version 1607 for 32-bit Systems	14393.5717	KB5022838	Feb 14, 2023
Windows 10 Version 1809 for 32-bit Systems	17763.4010	KB5022840	Feb 14, 2023
Windows 10 Version 20H2 for 32-bit Systems		KB5022834	Feb 14, 2023
Windows 10 Version 21H2 for 32-bit Systems		KB5022834	Feb 14, 2023
Windows 10 Version 22H2 for 32-bit Systems		KB5022834	Feb 14, 2023
Windows 10 for 32-bit Systems	10240.19747	KB5022858	Feb 14, 2023
Windows Server 2008 for 32-bit Systems Service Pack 2		KB5022893	Feb 14, 2023
Windows Server 2008 for 32-bit Systems Service Pack 2		KB5022890	Feb 14, 2023
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)		KB5022893	Feb 14, 2023
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)		KB5022890	Feb 14, 2023

Details

Published
February 14, 2023
Weakness
Integer Overflow or Wraparound
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21803

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