Known exploited vulnerability
CVE-2022-48503
The short answer
CVE-2022-48503 affects Apple macOS and is rated high (CVSS 8.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2025-10-20: attackers are using it, so patch it first.
What it is
The issue was addressed with improved bounds checks. This issue is fixed in tvOS 15.6, watchOS 8.7, iOS 15.6 and iPadOS 15.6, macOS Monterey 12.5, Safari 15.6. Processing web content may lead to arbitrary code execution.
Weakness: CWE-129.
Severity
8.8 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Oct 20, 2025
Federal due date Nov 10, 2025
EPSS, next 30 days
3.2%
Higher than 88% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected products
macOS, tvOS, Safari, watchOS, iOS and iPadOS. NVD's record lists the exact affected versions.
References
- support.apple.com/en-us/HT213340 Release NotesVendor Advisory
- support.apple.com/en-us/HT213341 Release NotesVendor Advisory
- support.apple.com/en-us/HT213342 Release NotesVendor Advisory
- support.apple.com/en-us/HT213345 Release NotesVendor Advisory
- support.apple.com/en-us/HT213346 Release NotesVendor Advisory
- support.apple.com/en-us/HT213340 Release NotesVendor Advisory
- support.apple.com/en-us/HT213341 Release NotesVendor Advisory
- support.apple.com/en-us/HT213342 Release NotesVendor Advisory
- support.apple.com/en-us/HT213345 Release NotesVendor Advisory
- support.apple.com/en-us/HT213346 Release NotesVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-48503 US Government Resource
Questions
Is CVE-2022-48503 being exploited?
Yes. CISA added CVE-2022-48503 to its Known Exploited Vulnerabilities catalog on 2025-10-20, with a federal remediation due date of 2025-11-10.
How do I fix CVE-2022-48503?
CISA's required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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