SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2019-5840

Incorrect security UI in popup blocker in Google Chrome on iOS prior to 75.0.3770.80 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page.

MEDIUM 4.3EPSS 1.04%

Does this matter?

Lower severity and a low EPSS score (1.04%). Track it; it rarely justifies an emergency change on its own.

Description

Incorrect security UI in popup blocker in Google Chrome on iOS prior to 75.0.3770.80 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page.

CVSS 3.1
4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS
1.04% probability · 64th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-362
Affected
google/chrome · debian/debian linux · fedoraproject/fedora · opensuse/backports · opensuse/leap
Source
chrome-cve-admin@google.com
EPSS trend
0%3%5%26 October 2026: 1.04%26 October 202626 October 2026

EPSS 1.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.