Threat Intelligence / CVE / CVE-2022-48503

CVE-2022-48503 — Apple Safari

CISA KEV

CVSS v3.1 8.8 (HIGH) · EPSS 0.1% (higher than 39.6% of all scored CVEs) · Priority 9/10 · Published 2023-08-14

As of 2025-10-23, CVE-2022-48503 is a HIGH-severity vulnerability in Apple Safari, CVSS v3.1 8.8, EPSS 0.1% (39.6th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-10-20), with a US federal remediation deadline of 2025-11-10. Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2022-48503, most recently “Coruna iOS Exploit Kit — Government-Grade 23-Exploit Arsenal Proliferates from Surveillance Vendor to Russian Espionage and Chinese Cybercriminals Targeting 42K+ Devices”.

Last updated: 2025-10-23

What is CVE-2022-48503?

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.

The record classifies CVE-2022-48503 under weakness classes NVD-CWE-noinfo, CWE-129. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 6 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 1126 days ago.

Severity and exploitation probability

CVSS v3.1 base score: 8.8 — HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (FIRST): 0.1% probability of exploitation in the next 30 days, higher than 39.6% of all scored CVEs
CISA KEV: Listed since 2025-10-20, federal remediation deadline 2025-11-10
Threadlinqs priority: 9/10 — CISA KEV-listed, which Threadlinqs floors at 9
Published: 2023-08-14, last modified 2025-10-23

Is CVE-2022-48503 being exploited?

CISA added CVE-2022-48503 to the Known Exploited Vulnerabilities catalog on 2025-10-20, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2025-11-10 under BOD 22-01. It currently carries a trending score of 25 in the Threadlinqs vulnerability feed.

Affected products and versions

Apple: Safari, Ipados, Iphone Os, Macos, Tvos, Watchos

How to fix CVE-2022-48503

The record marks a vendor fix as available for CVE-2022-48503. Patch reference: https://support.apple.com/en-us/HT213841. Vendor advisory: https://support.apple.com/en-us/HT213340. Because CVE-2022-48503 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2025-11-10. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2022-48503

1 tracked threat in the Threadlinqs corpus references CVE-2022-48503, either in the campaign’s CVE list or as an indicator on the campaign record.

Coruna iOS Exploit Kit — Government-Grade 23-Exploit Arsenal Proliferates from Surveillance Vendor to Russian Espionage and Chinese Cybercriminals Targeting 42K+ Devices — CRITICAL · 2026-03-04

Sources

Seeded from nvd and not yet processed by the Threadlinqs enrichment pipeline, so blank CVSS, EPSS or KEV fields above mean NOT MEASURED rather than measured-absent.

Full detection coverage & IOCs for threats exploiting CVE-2022-48503 are available via the Threadlinqs MCP server (Purple tier). View plans →

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