Threat Intelligence / CVE / CVE-2023-32409

CVE-2023-32409 — Apple Safari

CISA KEV

CVSS v3.1 8.6 (HIGH) · EPSS 0.3% (higher than 55.8% of all scored CVEs) · Priority 9/10 · Published 2023-06-23

As of 2026-01-13, CVE-2023-32409 is a HIGH-severity vulnerability in Apple Safari, CVSS v3.1 8.6, EPSS 0.3% (55.8th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-05-22), with a US federal remediation deadline of 2023-06-12. Threadlinqs Intelligence links 2 tracked threat campaigns to CVE-2023-32409, 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: 2026-01-13

What is CVE-2023-32409?

The issue was addressed with improved bounds checks. This issue is fixed in watchOS 9.5, tvOS 16.5, macOS Ventura 13.4, iOS 15.7.8 and iPadOS 15.7.8, Safari 16.5, iOS 16.5 and iPadOS 16.5. A remote attacker may be able to break out of Web Content sandbox. Apple is aware of a report that this issue may have been actively exploited.

The record classifies CVE-2023-32409 under weakness class NVD-CWE-noinfo. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on integrity. 6 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 1178 days ago.

Severity and exploitation probability

CVSS v3.1 base score: 8.6 — HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
EPSS (FIRST): 0.3% probability of exploitation in the next 30 days, higher than 55.8% of all scored CVEs
CISA KEV: Listed since 2023-05-22, federal remediation deadline 2023-06-12
Threadlinqs priority: 9/10 — CISA KEV-listed, which Threadlinqs floors at 9
Published: 2023-06-23, last modified 2026-01-13

Is CVE-2023-32409 being exploited?

CISA added CVE-2023-32409 to the Known Exploited Vulnerabilities catalog on 2023-05-22, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2023-06-12 under BOD 22-01. It currently carries a trending score of 29 in the Threadlinqs vulnerability feed.

Affected products and versions

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

How to fix CVE-2023-32409

The record marks a vendor fix as available for CVE-2023-32409. Patch reference: https://support.apple.com/en-us/HT213814. Vendor advisory: https://support.apple.com/en-us/HT213757. Because CVE-2023-32409 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2023-06-12. 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-2023-32409

2 tracked threats in the Threadlinqs corpus reference CVE-2023-32409, either in the campaign’s CVE list or as an indicator on the campaign record.

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) — CRITICAL · 2026-03-06
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-2023-32409 are available via the Threadlinqs MCP server (Purple tier). View plans →

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