Vulnerability Database

327,210

Total vulnerabilities in the database

CVE-2023-20520

Improper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-based buffer overrun potentially leading to arbitrary code execution.

  • Published: May 9, 2023
  • Updated: Nov 16, 2025
  • CVE: CVE-2023-20520
  • Severity: Critical
  • Exploit:

CVSS v3:

  • Severity: Critical
  • Score: 9.8
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWEs:

Software From Fixed in
amd / epyc_72f3_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7313_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7313p_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7343_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7373x_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_73f3_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7413_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7443_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7443p_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7453_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7473x_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_74f3_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7513_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7543_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7543p_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7573x_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_75f3_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7643_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7663_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7713_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7713p_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7763_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7773x_firmware milanpi_1.0.0.5 milanpi_1.0.0.5.x
amd / epyc_7232p_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7252_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7262_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7272_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7282_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7302_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7302p_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7352_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7402_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7402p_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7452_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7502_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7502p_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7532_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7542_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7552_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7642_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7662_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7702_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7702p_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7742_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7f32_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7f52_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7f72_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7h12_firmware romepi_1.0.0.d romepi_1.0.0.d.x
amd / epyc_7251_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x
amd / epyc_7261_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x
amd / epyc_7281_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x
amd / epyc_7301_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x
amd / epyc_7351_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x
amd / epyc_7351p_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x
amd / epyc_7371_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x
amd / epyc_7401_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x
amd / epyc_7401p_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x
amd / epyc_7451_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x
amd / epyc_7501_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x
amd / epyc_7551_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x
amd / epyc_7551p_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x
amd / epyc_7571_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x
amd / epyc_7601_firmware naplespi_1.0.0.h naplespi_1.0.0.h.x

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.