CVE-2021-21787 is a privilege escalation vulnerability in IOBit Advanced SystemCare Ultimate 14.2.0.220. It allows an unprivileged user to write a single byte to a specified I/O device port due to improper handling of Privileged I/O write requests by the product's driver. This vulnerability has a CVSS score of 8.8 (HIGH), indicating a local attack vector with low complexity, potentially leading to high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
14.2.0.220CPE matchmatch criteria | cpe:2.3:a:iobit:advanced_systemcare_ultimate:14.2.0.220:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.