Threat Intelligence / CVE / CVE-2023-42916

CVE-2023-42916 — Apple Safari

CISA KEV
CVSS v3.1 6.5 (MEDIUM) · EPSS 0.0% (higher than 14.7% of all scored CVEs) · Priority 9/10 · Published 2023-11-30

As of 2025-10-23, CVE-2023-42916 is a MEDIUM-severity vulnerability in Apple Safari, CVSS v3.1 6.5, EPSS 0.0% (14.7th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-12-04), with a US federal remediation deadline of 2023-12-25. Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2023-42916, most recently “Coruna iOS Exploit Kit — 23 Exploits Across 5 Chains Targeting iOS 13-17.2.1 (CVE-2021-30952, CVE-2023-41974, CVE-2023-43000 + 20 More)”.

Last updated: 2025-10-23

What is CVE-2023-42916?

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2. Processing web content may disclose sensitive information. Apple is aware of a report that this issue may have been exploited against versions of iOS before iOS 16.7.1.

The record classifies CVE-2023-42916 under weakness class CWE-125. 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. 9 affected-product entries are recorded, across 4 vendors, listed below. The identifier was first published 1018 days ago.

Severity and exploitation probability

CVSS v3.1 base score
6.5 — MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS (FIRST)
0.0% probability of exploitation in the next 30 days, higher than 14.7% of all scored CVEs
CISA KEV
Listed since 2023-12-04, federal remediation deadline 2023-12-25
Threadlinqs priority
9/10 — CISA KEV-listed, which Threadlinqs floors at 9
Published
2023-11-30, last modified 2025-10-23

Is CVE-2023-42916 being exploited?

CISA added CVE-2023-42916 to the Known Exploited Vulnerabilities catalog on 2023-12-04, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2023-12-25 under BOD 22-01. It currently carries a trending score of 19 in the Threadlinqs vulnerability feed.

Affected products and versions

How to fix CVE-2023-42916

The record marks a vendor fix as available for CVE-2023-42916. Patch reference: https://support.apple.com/en-us/HT214031. Vendor advisory: https://support.apple.com/en-us/HT214031. Because CVE-2023-42916 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2023-12-25. 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-2023-42916

1 tracked threat in the Threadlinqs corpus references CVE-2023-42916, either in the campaign’s CVE list or as an indicator on the campaign record.

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-2023-42916 are available via the Threadlinqs MCP server (Purple tier). View plans →

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