CVE-2023-21729
Published: 11 April 2023
Summary
CVE-2023-21729 is a medium-severity Out-of-bounds Read (CWE-125) vulnerability in Microsoft Windows Server 2008. Its CVSS base score is 4.3 (Medium).
Operationally, ranked in the top 9.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2023-21729 is an information disclosure vulnerability in the Remote Procedure Call Runtime component, assigned CWE-125 and carrying a CVSS 3.1 score of 4.3. The flaw permits partial leakage of sensitive data over a network connection when the affected RPC service processes certain requests.
An attacker with low privileges and no user interaction required can exploit the issue remotely to read limited information from the target system. The attack vector is rated network-accessible with low complexity, affecting confidentiality while leaving integrity and availability untouched.
Microsoft has published an advisory at the listed MSRC URL that addresses the vulnerability. The associated EPSS score has remained low and essentially flat, moving only from a peak of 0.0529 to a current value of 0.0520.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-25896
Vulnerability details
Remote Procedure Call Runtime Information Disclosure 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.