SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-30870

Previewing an html file attached to a note may unexpectedly contact remote servers.

MEDIUM 6.5EPSS 0.85%

Does this matter?

Lower severity and a low EPSS score (0.85%). Track it; it rarely justifies an emergency change on its own.

Description

A logic issue existed in the handling of document loads. This issue was addressed with improved state management. This issue is fixed in iOS 15 and iPadOS 15. Previewing an html file attached to a note may unexpectedly contact remote servers.

CVSS 3.1
6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS
0.85% probability · 58th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
apple/ipados · apple/iphone os
Source
product-security@apple.com
EPSS trend
0%3%5%26 October 2026: 0.85%26 October 202626 October 2026

EPSS 0.9% 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.