VulnTideExploited vulnerabilities, by vendor. Data as of .
Not in CISA KEVReported exploited: VulnCheck KEV since Published CVSS 7.5 highEPSS 0.6% probability of exploitation in 30 days
Apple

CVE-2023-23524: A denial-of-service issue was addressed with improved input validation.

Is it exploited?

Reported, not confirmed by CISA. VulnCheck KEV lists it as exploited in the wild. CISA has not added it to its Known Exploited Vulnerabilities catalog as of .

VulnCheck KEV lists it since . It cites 1 public report, the first from .

How likely is exploitation in the next 30 days?
0.6%

EPSS score, percentile 48.7 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?
7.5 High

CVSS v3.1 base score, from CISA's enrichment of the record

What should I do?

CISA has set no required action, because the vulnerability is not in KEV.

The CVE record links no vendor advisory, patch or mitigation.

Which versions are affected?

Affected

  • before 16.3
  • before 9.3
  • before 13.2
  • before 16.3

Versions by product

Source: CISA KEV 2026.10.29, as of ; VulnCheck KEV, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.

Description

A denial-of-service issue was addressed with improved input validation. This issue is fixed in tvOS 16.3.2, iOS 16.3.1 and iPadOS 16.3.1, watchOS 9.3.1, macOS Ventura 13.2.1. Processing a maliciously crafted certificate may lead to a denial-of-service.

Source: CVE List, as of . About the data.

What to do

Advisories and patches

The CVE record links no vendor advisory, patch or mitigation.

This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

Versions by product, as listed in the CVE record (4 products)
Apple iOS and iPadOS
StatusVersions
Affectedbefore 16.3
Apple watchOS
StatusVersions
Affectedbefore 9.3
Apple macOS
StatusVersions
Affectedbefore 13.2
Apple tvOS
StatusVersions
Affectedbefore 16.3

Source: CVE List, as of . About the data.

Weakness

CWE-400
  • CWE-400: Uncontrolled Resource Consumption

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.

Timeline

DateEvent
CVE record published
CVE record last updated

References

4

Known exploited Apple vulnerabilities

  • CVE-2026-86950: Apple Multiple Products Out-of-Bounds Write Vulnerability (added )
  • CVE-2026-65400: Apple macOS Improper Authentication Vulnerability (added )
  • CVE-2025-31277: Apple Multiple Products Buffer Overflow Vulnerability (added )
  • CVE-2025-43510: Apple Multiple Products Improper Locking Vulnerability (added )
  • CVE-2025-43520: Apple Multiple Products Classic Buffer Overflow Vulnerability (added )