CVE-2021-30860
HIGH severity · CVSS 7.8 · Integer overflow · actively exploited (CISA KEV)
7.8CVSS HIGH exploited
Actively exploited in the wild (CISA Known Exploited Vulnerabilities).
Added to KEV 2021-11-03. US federal agencies must patch by 2021-11-17.
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)76%
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://seclists.org/fulldisclosure/2021/Sep/25Advisory
- http://seclists.org/fulldisclosure/2021/Sep/26Advisory
- http://seclists.org/fulldisclosure/2021/Sep/27Advisory
- http://seclists.org/fulldisclosure/2021/Sep/28Advisory
- http://seclists.org/fulldisclosure/2021/Sep/38Advisory
- http://seclists.org/fulldisclosure/2021/Sep/39Advisory
- http://seclists.org/fulldisclosure/2021/Sep/40Advisory
- http://seclists.org/fulldisclosure/2021/Sep/50Advisory