CVE-2021-27208 is a buffer overflow vulnerability affecting Xilinx Zynq-7000 and Zynq-7000S devices and their firmware. When booting from NAND flash, the ROM's NAND driver fails to validate parameter page inputs, potentially leading to arbitrary code execution if a field is excessively large. This medium-severity vulnerability (CVSS 6.8) requires physical access to the board to replace the NAND flash with an emulation device, making it a complex attack. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:xilinx:zynq-7000s_firmware:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:xilinx:zynq-7000_firmware:-:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.