Is CVE-2023-23529 in the CISA KEV catalog?

Yes. CVE-2023-23529 is on the CISA Known Exploited Vulnerabilities list, added 2023-02-14.

What is the CVSS severity of CVE-2023-23529?

CVE-2023-23529 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2023-23529?

CVE-2023-23529 has an EPSS score of 9.50% (95th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2023-23529

HIGHCISA KEVEPSS 95th pctl

8.8

CVSS v3

NVD

Description

A type confusion issue was addressed with improved checks. This issue is fixed in iOS 15.7.4 and iPadOS 15.7.4, iOS 16.3.1 and iPadOS 16.3.1, macOS Ventura 13.2.1, Safari 16.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

CWE-843Type Confusion

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

9.50%probability of exploitation in 30 days

95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Apple Multiple Products WebKit Type Confusion Vulnerability

Apple iOS, MacOS, Safari and iPadOS WebKit contain a type confusion vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

Apply updates per vendor instructions.

Remediation due: 2023-03-07

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-23.