Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
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, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked in the top 29% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
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 Data
Remote Procedure Call Runtime Information Disclosure Vulnerability
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Vulnerability scanning and recording can discover instances of out-of-bounds reads after code is deployed.
Routine patching replaces vulnerable code containing out-of-bounds read flaws.
Secure-development practices such as bounds checking and memory-safe languages directly prevent out-of-bounds reads.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.