CVE-2023-20585 | AMD EPYC 7003 Processors access of memory location after end of buffer (EUVD-2023-24764)

VDB-357955 · CVE-2023-20585 · EUVD-2023-24764 AMD EPYC 7003 PROCESSORS ACCESS OF MEMORY LOCATION AFTER END OF BUFFER HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.0 $0-$5k 3.49 Summaryinfo A vulnerability has been found in AMD EPYC 7003 Processors, EPYC 9004 Processors, EPYC Embedded 7003 Processors and EPYC Embedded 9004 Processors and classified as problematic. This issue affects some unknown processing. This manipulation causes access of memory location after end of buffer. This vulnerability is registered as CVE-2023-20585. The attack needs to be launched locally. No exploit is available. Detailsinfo A vulnerability was found in AMD EPYC 7003 Processors, EPYC 9004 Processors, EPYC Embedded 7003 Processors and EPYC Embedded 9004 Processors (the affected version unknown). It has been declared as problematic. Affected by this vulnerability is an unknown part. The manipulation with an unknown input leads to a access of memory location after end of buffer vulnerability. The CWE definition for the vulnerability is CWE-788. The product reads or writes to a buffer using an index or pointer that references a memory location after the end of the buffer. As an impact it is known to affect integrity, and availability. The summary by CVE is: Insufficient checks of the RMP on host buffer access in IOMMU may allow an attacker with privileges and a compromised hypervisor to trigger an out of bounds condition without RMP checks, resulting in a potential loss of confidential guest integrity. It is possible to read the advisory at amd.com. This vulnerability is known as CVE-2023-20585 since 10/27/2022. The exploitation appears to be difficult. Attacking locally is a requirement. The exploitation requires an enhanced level of successful authentication. The technical details are unknown and an exploit is not publicly available. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-24764). Productinfo Vendor AMD Name EPYC 7003 Processors EPYC 9004 Processors EPYC Embedded 7003 Processors EPYC Embedded 9004 Processors License commercial CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 3.0 VulDB Meta Temp Score: 3.0 VulDB Base Score: 3.0 VulDB Temp Score: 3.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Access of memory location after end of buffer CWE: CWE-788 / CWE-120 / CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: No Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 10/27/2022 CVE reserved 04/16/2026 +1267 days Advisory disclosed 04/16/2026 +0 days VulDB entry created 04/16/2026 +0 days VulDB entry last update Sourcesinfo Advisory: amd.com Status: Confirmed CVE: CVE-2023-20585 (🔒) GCVE (CVE): GCVE-0-2023-20585 GCVE (VulDB): GCVE-100-357955 EUVD: 🔒 Entryinfo Created: 04/16/2026 21:40 Updated: 04/16/2026 22:20 Changes: 04/16/2026 21:40 (62), 04/16/2026 22:20 (1) Complete: 🔍 Cache ID: 99:506:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸