SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-2383

It allows man-in-the-middle attackers to track users via correlation with this certificate.

LOW 3.1EPSS 0.44%

Does this matter?

Lower severity and a low EPSS score (0.44%). Track it; it rarely justifies an emergency change on its own.

Description

An issue was discovered in certain Apple products. iCloud before 6.2 on Windows is affected. iTunes before 12.6 on Windows is affected. The issue involves cleartext client-certificate transmission in the "APNs Server" component. It allows man-in-the-middle attackers to track users via correlation with this certificate.

CVSS 3.0
3.1 LOWCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
0.44% probability · 38th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
apple/icloud · apple/itunes
Source
product-security@apple.com
EPSS trend
0%3%5%27 October 2026: 0.44%27 October 202627 October 2026

EPSS 0.4% since 27 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.