CVE-2021-25263

HIGH

Yandex Browser <21.9.0.390 - Privilege Escalation

Title source: llm
STIX 2.1

Description

Local privilege vulnerability in Yandex Browser for Windows prior to 21.9.0.390 allows a local, low privileged, attacker to execute arbitary code with the SYSTEM privileges through manipulating files in directory with insecure permissions during Yandex Browser update process.

References (1)

Core 1
Core References
Vendor Advisory x_refsource_misc
https://yandex.com/bugbounty/i/hall-of-fame-browser/

Scores

CVSS v3 7.8
EPSS 0.0010
EPSS Percentile 26.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-732
Status published
Products (1)
yandex/yandex_browser < 21.9.0.390
Published Aug 17, 2021
Tracked Since Feb 18, 2026