SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-2504

It allows remote attackers to conduct Universal XSS (UXSS) attacks via a crafted web site that improperly interacts with WebKit Editor commands.

EXPLOIT ✓MEDIUM 6.1EPSS 3.35%

Does this matter?

A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 3.3%. Treat it as high on anything reachable from the internet.

Description

An issue was discovered in certain Apple products. iOS before 10.3.2 is affected. Safari before 10.1.1 is affected. tvOS before 10.2.1 is affected. The issue involves the "WebKit" component. It allows remote attackers to conduct Universal XSS (UXSS) attacks via a crafted web site that improperly interacts with WebKit Editor commands.

CVSS 3.0
6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
3.35% probability · 89th percentile
Public exploits
1 in Exploit-DB · verified · first 25 May 2017
CISA KEV
Not listed
Weakness
CWE-79
Affected
apple/safari · apple/iphone os · apple/tvos
Source
product-security@apple.com
EPSS trend
0%3%5%21 September 2026: 4.48%22 September 2026: 3.35%28 October 2026: 3.35%21 September 202628 October 2026

EPSS moved from 4.5% on 21 September 2026 to 3.3% on 28 October 2026.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-42064source ↗Apple WebKit / Safari 10.0.3(12602.4.8) - 'Editor::Command::execute' Universal Cross-Site Scriptingmultiple · Google Security Researchwebapps25 May 2017yes

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