CVE-2021-25263 is a local privilege escalation vulnerability affecting Yandex Browser for Windows versions prior to 21.9.0.390. A low-privileged local attacker can leverage insecure file permissions during the browser's update process to execute arbitrary code with SYSTEM privileges. This vulnerability has a CVSS score of 7.8 (High), indicating a high impact on confidentiality, integrity, and availability, with low attack complexity and no user interaction required. 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 |
|---|---|---|---|
< 21.9.0.390CPE matchmatch criteria | cpe:2.3:a:yandex:yandex_browser:*:*:*:*:*:windows:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 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.