CVE-2023-32434

Exp

An integer overflow was addressed with improved input validation. This issue is fixed in watchOS 9.5.2, macOS Big Sur 11.7.8, iOS 15.7.7 and iPadOS 15.7.7, macOS Monterey 12.6.7, watchOS 8.8.1, iOS 16.5.1 and iPadOS 16.5.1, macOS Ventura 13.4.1. An app may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.7.

Published: 2023-06-23 Last update: 2025-10-23 Assigner: [email protected] Source: [email protected]

NVD Status：Analyzed，CVE State: published

View at NVD, CVE.org, EUVD

Threat Intelligence & Risk Assessment for CVE-2023-32434

KEV EPSS CVSS CWE Affected

Conclusion & alert: CVE-2023-32434 is rated Critical Active Threat (88.9/100): CVSS High severity, with high exploitation likelihood (EPSS 52.38%, 98th percentile). Core evidence: CISA KEV confirms active exploitation (added 2023-06-23) affecting Apple / Multiple Products. a weakness (CWE-190) Unauthenticated remote administrative access may be possible. Mandatory action: The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2023-32434

Name: Apple Multiple Products Integer Overflow Vulnerability · CISA KEV detail

Exploit added: 2023-06-23

Action due: 2023-07-14

Required action: Apply updates per vendor instructions.

Exploit prediction scoring system (EPSS) score for CVE-2023-32434

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-05-26	53.99%	52.38%	-1.61%
2	2026-05-24	53.47%	53.99%	+0.52%
3	2026-05-20	—	53.47%	—

Full EPSS history (60 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-32434

CVSS metrics for this CVE.

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.8	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	5.9	[email protected]
7.8	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-32434

CWE-190 MITRE ↗

Affected software / configurations for CVE-2023-32434

Vendor	Product	Version	Raw CPE
apple	ipados	< 15.7.7	cpe:2.3:o:apple:ipados::::::::
apple	ipados	>= 16.0, < 16.5.1	cpe:2.3:o:apple:ipados::::::::
apple	iphone_os	< 15.7.7	cpe:2.3:o:apple:iphone_os::::::::
apple	iphone_os	>= 16.0, < 16.5.1	cpe:2.3:o:apple:iphone_os::::::::
apple	macos	>= 11.0, < 11.7.8	cpe:2.3:o:apple:macos::::::::
apple	macos	>= 12.0.0, < 12.6.7	cpe:2.3:o:apple:macos::::::::
apple	macos	>= 13.0, < 13.4.1	cpe:2.3:o:apple:macos::::::::
apple	watchos	< 8.8.1	cpe:2.3:o:apple:watchos::::::::
apple	watchos	>= 9.0, < 9.5.2	cpe:2.3:o:apple:watchos::::::::

References for CVE-2023-32434

URL	Tags
http://seclists.org/fulldisclosure/2023/Oct/20	Mailing List Third Party Advisory
https://support.apple.com/en-us/HT213808	Vendor Advisory
https://support.apple.com/en-us/HT213809	Vendor Advisory
https://support.apple.com/en-us/HT213810	Vendor Advisory
https://support.apple.com/en-us/HT213811	Vendor Advisory
https://support.apple.com/en-us/HT213812	Vendor Advisory
https://support.apple.com/en-us/HT213813	Vendor Advisory
https://support.apple.com/en-us/HT213814	Vendor Advisory
https://support.apple.com/kb/HT213990	Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-32434	US Government Resource

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