CVE-2023-32020
Published: 14 June 2023
Summary
CVE-2023-32020 is a medium-severity Reliance on Reverse DNS Resolution for a Security-Critical Action (CWE-350) vulnerability in Microsoft Windows Server 2008. Its CVSS base score is 5.6 (Medium).
Operationally, ranked in the top 20.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2023-32020 is a DNS spoofing vulnerability affecting the Windows DNS component. It carries a CVSS 3.1 base score of 5.6 and is associated with CWE-350, reflecting improper reliance on DNS for security decisions.
An unauthenticated remote attacker can exploit the flaw over the network without user interaction, though the attack requires high complexity. Successful exploitation allows limited impacts to confidentiality, integrity, and availability by spoofing DNS responses.
Microsoft has published an advisory for CVE-2023-32020 that includes patch availability and mitigation guidance; practitioners should consult the MSRC update guide for remediation steps specific to affected Windows versions.
The EPSS score rose from a low starting point to a peak of 0.0762 on 2025-01-22 before receding to the current value of 0.0119, indicating that exploitation interest emerged after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-36307
Vulnerability details
Windows DNS Spoofing 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.