CVE-2021-46755 is a denial-of-service vulnerability affecting AMD Secure Processors, where a failure to unmap SysHub mappings in error paths of the ASP bootloader can be exploited by a malicious bootloader. This allows an attacker to exhaust SysHub resources, leading to a denial of service. Rated as HIGH severity with a CVSS score of 7.5, it is a network-exploitable vulnerability with low attack complexity, requiring no user interaction. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
comboam4_v2_pi_1.2.0.8CPE matchmatch criteria | cpe:2.3:o:amd:ryzen_5500_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:* | ||
comboam4v2_pi_1.2.0.6CPE matchmatch criteria | cpe:2.3:o:amd:ryzen_5500_firmware:comboam4v2_pi_1.2.0.6:*:*:*:*:*:*:* | ||
comboam4_v2_pi_1.2.0.8CPE matchmatch criteria | cpe:2.3:o:amd:ryzen_5600_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:* | ||
comboam4v2_pi_1.2.0.6CPE matchmatch criteria | cpe:2.3:o:amd:ryzen_5600_firmware:comboam4v2_pi_1.2.0.6:*:*:*:*:*:*:* | ||
comboam4_v2_pi_1.2.0.8CPE matchmatch criteria | cpe:2.3:o:amd:ryzen_5600g_firmware:comboam4_v2_pi_1.2.0.8:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.