What is CVE-2016-4075?

CVE-2016-4075 is a medium-severity vulnerability in Opera Browser, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2017-04-21.

How severe is CVE-2016-4075?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2016-4075 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Open Redirect in Opera Browser

CVE-2016-4075

Opera Mini 13 and Opera Stable 36 allow remote attackers to spoof the displayed URL via a crafted HTML document, related to the about:blank URL.

Vulnerability class: Open Redirect

Published 2017-04-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.012 (67.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Opera Browser — versions 36.0
Opera Mini — versions 13.00

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

www.securityfocus.com/bid/98004 (VDB Entry, Third Party Advisory, vdb-entry)
abhikafle.com.np/opera-url-spoofing-poc/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2016-4075?: CVE-2016-4075 is a medium-severity vulnerability in Opera Browser, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2017-04-21.
How severe is CVE-2016-4075?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2016-4075 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.