CVE-2021-26356 is a Time-of-Check to Time-of-Use (TOCTOU) vulnerability in the AMD ASP bootloader, allowing an attacker to tamper with SPI ROM data after it's read into memory. This could lead to S3 data corruption and information disclosure. With a CVSS score of 7.4 (HIGH), it presents a high impact on confidentiality and integrity, though it requires high attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< naplespi_1.0.0.hCPE matchmatch criteria | cpe:2.3:o:amd:epyc_7001_firmware:*:*:*:*:*:*:*:* | ||
< naplespi_1.0.0.hCPE matchmatch criteria | cpe:2.3:o:amd:epyc_7251_firmware:*:*:*:*:*:*:*:* | ||
< naplespi_1.0.0.hCPE matchmatch criteria | cpe:2.3:o:amd:epyc_7261_firmware:*:*:*:*:*:*:*:* | ||
< naplespi_1.0.0.hCPE matchmatch criteria | cpe:2.3:o:amd:epyc_7281_firmware:*:*:*:*:*:*:*:* | ||
< naplespi_1.0.0.hCPE matchmatch criteria | cpe:2.3:o:amd:epyc_7301_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 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.