CVE-2021-34857 is a local privilege escalation vulnerability affecting Parallels Desktop 16.1.3 (49160), specifically within the Toolgate component. It stems from improper validation of user-supplied data, leading to a buffer overflow. This vulnerability carries a CVSS score of 8.8 (High), indicating a low-complexity attack where a local attacker with high-privileged code execution on the guest system can escalate privileges to the hypervisor and execute arbitrary code. 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 |
|---|---|---|---|
16.1.3CPE matchmatch criteria | cpe:2.3:a:parallels:parallels_desktop:16.1.3:*:*:*:*:macos:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:L/AC:L/PR:H/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.