Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-qu2d-vqp3-w3e3
Vulnerability ID VCID-qu2d-vqp3-w3e3
Aliases CVE-2025-3839
Summary A flaw was found in Epiphany, a tool that allows websites to open external URL handler applications with minimal user interaction. This design can be misused to exploit vulnerabilities within those handlers, making them appear remotely exploitable. The browser fails to properly warn or gate this action, resulting in potential code execution on the client device via trusted UI behavior.
Status Published
Exploitability 0.5
Weighted Severity 7.2
Risk 3.6
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-356 Product UI does not Warn User of Unsafe Actions
System Score Found at
cvssv3.1 8 https://access.redhat.com/security/cve/CVE-2025-3839
ssvc Track https://access.redhat.com/security/cve/CVE-2025-3839
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-3839
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-3839
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-3839
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-3839
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-3839
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-3839
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-3839
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-3839
cvssv3.1 8 https://bugzilla.redhat.com/show_bug.cgi?id=2361430
ssvc Track https://bugzilla.redhat.com/show_bug.cgi?id=2361430
cvssv3.1 8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2025-3839
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-3839
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
CVE-2025-3839 https://access.redhat.com/security/cve/CVE-2025-3839
show_bug.cgi?id=2361430 https://bugzilla.redhat.com/show_bug.cgi?id=2361430
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N Found at https://access.redhat.com/security/cve/CVE-2025-3839
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-01-23T18:54:33Z/ Found at https://access.redhat.com/security/cve/CVE-2025-3839
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N Found at https://bugzilla.redhat.com/show_bug.cgi?id=2361430
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-01-23T18:54:33Z/ Found at https://bugzilla.redhat.com/show_bug.cgi?id=2361430
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.04377
EPSS Score 0.00018
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T16:38:43.564224+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.0.0