What is CVE-2016-8503?

CVE-2016-8503 is a high-severity vulnerability in Yandex Browser, classified under CWE-254. CVSS score: 7.3/10. Published 2016-10-26.

How severe is CVE-2016-8503?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in Yandex Browser

CVE-2016-8503

Yandex Protect Anti-phishing warning in Yandex Browser for desktop from version 16.7 to 16.9 could be used by remote attacker for brute-forcing passwords from important web-resource with special JavaScript.

Published 2016-10-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.010 (61.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Yandex Browser — versions 16.7.0.3342, 16.7.1.20808, 16.9.1.1131
Yandex N.v. Browser For Desktop — versions 16.7 to 16.9 for Windows and OSx.

Weakness classification (CWE)

CWE-254

References

www.securityfocus.com/bid/93921 (VDB Entry, Third Party Advisory, vdb-entry)
browser.yandex.com/security/changelogs/ (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2016-8503?: CVE-2016-8503 is a high-severity vulnerability in Yandex Browser, classified under CWE-254. CVSS score: 7.3/10. Published 2016-10-26.
How severe is CVE-2016-8503?: High severity. CVSS v3 base score is 7.3 out of 10.