8.3

CVE-2021-25255: Yandex Browser Lite for Android prior to version 21.1.0 allows remote attackers to cause a denial of service.

Analyzed
Published 21-05-2025Last modified 21-05-2025

Vulnerability summary

CVE-2021-25255 is a high (CVSS 8.3) Improper Input Validation vulnerability in yandex browser lite. EPSS estimates a 0.82% chance of exploitation in the next 30 days, higher than 56.8% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.3/10
010
High · v4.0 (CVE.org)
EPSS score
0.82%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 21-05-2025
    PublishedVulnerability first disclosed.
  2. 21-05-2025
    Last modifiedVulnerability information updated.

Description

Yandex Browser Lite for Android prior to version 21.1.0 allows remote attackers to cause a denial of service.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.82%

Chance of exploitation in the next 30 days

Percentile

57%

Versus all other CVEs

30-day change

Increase +0.03 pp

From 0.79% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Yandex2 products

1 vendor · 2 products

References

1 links