CVE-2023-21702
Published: 14 February 2023
Summary
CVE-2023-21702 is a high-severity Out-of-bounds Read (CWE-125) vulnerability in Microsoft Windows Server 2008. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 5.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Windows iSCSI Service contains a denial-of-service vulnerability tracked as CVE-2023-21702 and assigned CWE-125. The flaw affects the iSCSI component in supported Windows releases and carries a CVSS 3.1 base score of 7.5 reflecting network attack vector, low complexity, and no required privileges or user interaction, with high impact solely on availability.
An unauthenticated remote attacker can send specially crafted network traffic to an exposed iSCSI target or initiator, triggering an out-of-bounds read that causes the service to stop responding. Successful exploitation results in loss of storage connectivity for any systems relying on the affected iSCSI service without allowing data disclosure or integrity changes.
Microsoft has published remediation guidance and security updates for the vulnerability through its Security Response Center at the listed MSRC advisory URL. The associated EPSS score has remained flat at 0.1382 since disclosure, indicating no material increase in observed exploitation interest.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-25869
Vulnerability details
Windows iSCSI Service Denial of Service Vulnerability
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.