What is CVE-2021-25263?

CVE-2021-25263 is a high-severity vulnerability in Yandex Browser, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2021-08-17.

How severe is CVE-2021-25263?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Yandex Browser

CVE-2021-25263

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.

EPSS: 0.003 (22.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Yandex Yandex_browser
N/a Yandex Browser (Desktop) — versions All versions prior to version 21.9.0.390

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

browser-security@yandex-team.ru (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-25263?: CVE-2021-25263 is a high-severity vulnerability in Yandex Browser, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2021-08-17.
How severe is CVE-2021-25263?: High severity. CVSS v3 base score is 7.8 out of 10.