High severity · published Aug 24, 2021
CVE-2021-30860
Apple Multiple Products Integer Overflow Vulnerability
In wildKEV
7.8
CVSS
76%
EPSS
Yes
On KEV
Description
An integer overflow was addressed with improved input validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, watchOS 7.6.2. Processing a maliciously crafted PDF may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)76.0% · higher than 100% of CVEs
Exploited in the wildYes
CISA KEVListed Nov 3, 2021
Federal remediation dueNov 17, 2021
Ransomware campaign useNot known
Affected products
Which versions
IO
iOS · Apple
before 14.8 · source: vendor, NVD
MA
macOS · Apple
before 11.6; before 2021-005 · source: vendor, NVD
WA
watchOS · Apple
before 7.6 · source: vendor, NVD
MO
Mac OS X · Apple
10.15 before 10.15.7; 10.15.7; 10.15.7; 10.15.7; 10.15.7; 10.15.7; +2 more · source: NVD
PO
Poppler · Freedesktop
before 22.09.0 · source: NVD
XP
Xpdf · Xpdfreader
before 4.04 · source: NVD
MP
Multiple Products · Apple
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30860
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-30860
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_MISC
https://support.apple.com/en-us/HT212804
x_refsource_MISC
https://support.apple.com/en-us/HT212805
x_refsource_MISC
https://support.apple.com/en-us/HT212807
x_refsource_MISC
https://support.apple.com/en-us/HT212806
mailing-list
http://seclists.org/fulldisclosure/2021/Sep/28
mailing-list
http://seclists.org/fulldisclosure/2021/Sep/27
More from iOS
10.0
CVE-2025-43300
Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability
10.0
CVE-2025-24201
Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability
10.0
CVE-2025-24085
Apple Multiple Products Use-After-Free Vulnerability
9.8
CVE-2025-31200
Apple Multiple Products Memory Corruption Vulnerability
9.8
CVE-2025-31201
Apple Multiple Products Arbitrary Read and Write Vulnerability