CVE-2023-20559
Amd Ryzen 7 5700G Firmware ≤ comboam4_v2_pi_1.2.0.6c
Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSummary
CVE-2023-20559 is a high-severity Insufficient Control Flow Management (CWE-691) vulnerability in Amd Ryzen 7 5700G Firmware. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Hijack Execution Flow (T1574); ranked at the 49th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-24738
Vulnerability Data
Insufficient control flow management in AmdCpmGpioInitSmm may allow a privileged attacker to tamper with the SMM handler potentially leading to escalation of privileges.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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- 2 hardening rules · 2 OS baselines
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Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Design principles and implementation approaches enforce robust control-flow management to maintain function and enable recovery after disruption.
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.
Secure SDLC activities such as static analysis, code review, and testing directly prevent control-flow weaknesses while also addressing many other coding defects.
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.
Security testing in development and acceptance can detect control-flow weaknesses but does not itself implement preventive controls.
Secure development life cycle mandates structured control-flow design and review that directly reduces unexpected flow manipulation.
Secure system architecture and engineering principles require explicit control-flow integrity mechanisms and error-handling paths.
Secure coding standards explicitly forbid constructs that allow unintended control-flow changes such as missing breaks or unsafe jumps.
Change management reduces introduction of control-flow defects through controlled updates but does not address the weakness directly.
Hardening callouts derived
Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).
Windows 10 (1 rule)
- V-220726 Data Execution Prevention (DEP) must be configured to at least OptOut. prevents CWE-691
Windows 11 (1 rule)
- V-253283 Data Execution Prevention (DEP) must be configured to at least OptOut. prevents CWE-691