CVE-2021-25435 is a critical improper input validation vulnerability in the Tizen bootloader, affecting Linux Tizen devices. This flaw, present in versions prior to the JUL-2021 firmware update, allows for arbitrary code execution through the recovery partition during wireless firmware download mode. With a CVSS score of 9.8, it poses a severe risk of complete compromise (confidentiality, integrity, availability) with low attack complexity and no user interaction required. While no public exploit code or active exploitation has been observed, and community discussion is minimal, its high severity warrants immediate patching.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 5.5CPE matchmatch criteria | cpe:2.3:o:linux:tizen:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/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, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.