What is CVE-2021-33593?

CVE-2021-33593 is a medium-severity vulnerability in Naver Whale Browser, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 5.3/10. Published 2021-11-02.

How severe is CVE-2021-33593?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Naver Whale Browser

CVE-2021-33593

Whale browser for iOS before 1.14.0 has an inconsistent user interface issue that allows an attacker to obfuscate the address bar which may lead to address bar spoofing.

Published 2021-11-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (51.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Naver Whale Browser — versions unspecified
Navercorp Whale

Weakness classification (CWE)

CWE-451 — User Interface (UI) Misrepresentation of Critical Information

References

cve.naver.com/detail/cve-2021-43059 (Not Applicable, Broken Link)

Frequently asked questions

What is CVE-2021-33593?: CVE-2021-33593 is a medium-severity vulnerability in Naver Whale Browser, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 5.3/10. Published 2021-11-02.
How severe is CVE-2021-33593?: Medium severity. CVSS v3 base score is 5.3 out of 10.