Security Resilience

CVE-2023-32435

Memory Safety in Apple Ipados ≤ 15.7.7

CISA KEVActive ExploitationEUVD ExploitedMemory Safety
Published
23 June 2023
Modified
23 October 2025
KEV Added
23 June 2023
Patch / advisory
CVSS Score v3.1 8.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.23 98th percentile
Risk Priority 90 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-32435 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Apple Ipados. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Security Account Manager (T1003.002); ranked in the top 2% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

A memory corruption vulnerability exists in Apple's web content processing components due to insufficient state management. It affects macOS Ventura prior to version 13.3, Safari prior to 16.4, iOS and iPadOS prior to 16.4, and iOS and iPadOS prior to 15.7.7. The flaw is assigned CWE-787 and carries a CVSS 3.1 score of 8.8.

An unauthenticated remote attacker can exploit the issue by causing a victim to process malicious web content in an affected browser or operating system version, resulting in arbitrary code execution.

Apple security advisories for the listed updates state that the vulnerability is resolved by improved state management in macOS Ventura 13.3, Safari 16.4, iOS 16.4 and iPadOS 16.4, and iOS 15.7.7 and iPadOS 15.7.7.

Apple has reported that the issue may have been actively exploited in the wild against versions of iOS released before iOS 15.7. The current EPSS score stands at 0.0042.

EU & UK References

Vulnerability Data

A memory corruption issue was addressed with improved state management. This issue is fixed in macOS Ventura 13.3, Safari 16.4, iOS 16.4 and iPadOS 16.4, iOS 15.7.7 and iPadOS 15.7.7. Processing web content may lead to arbitrary code execution. Apple…

more

is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.7.

CWE(s)
KEV Date Added
23 June 2023

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003.002 Security Account Manager Credential Access
Adversaries may attempt to extract credential material from the Security Account Manager (SAM) database either through in-memory techniques or through the Windows Registry where the SAM database is stored.
T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
T1006 Direct Volume Access Stealth
Adversaries may directly access a volume to bypass file access controls and file system monitoring.
T1007 System Service Discovery Discovery
Adversaries may try to gather information about registered local system services.
T1012 Query Registry Discovery
Adversaries may interact with the Windows Registry to gather information about the system, configuration, and installed software.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2022-22587Same product: Apple Ipadosboth on KEV
CVE-2022-32917Same product: Apple Ipadosboth on KEV
CVE-2021-30900Same product: Apple Ipadosboth on KEV
CVE-2023-28206Same product: Apple Ipadosboth on KEV
CVE-2022-32894Same product: Apple Ipadosboth on KEV
CVE-2021-30807Same product: Apple Ipadosboth on KEV
CVE-2022-22675Same product: Apple Ipadosboth on KEV
CVE-2021-30883Same product: Apple Ipadosboth on KEV
CVE-2020-27930Same product: Apple Ipadosboth on KEV
CVE-2022-42827Same product: Apple Ipadosboth on KEV

Affected Assets

apple
safari
≤ 16.4
apple
ipados
≤ 15.7.7 · 16.0 — 16.4
apple
iphone os
≤ 15.7.7 · 16.0 — 16.4
apple
macos
13.0 — 13.3

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

ID.RA-01 partial match
blocks

Vulnerability scanning and recording can discover out-of-bounds write flaws so they can be remediated.

PR.PS-02 partial match
blocks

Patching or replacing vulnerable software directly eliminates known instances of this coding weakness.

PR.PS-06 partial match
blocks

Secure-development practices (static analysis, bounds checking, code review) are the primary means of preventing out-of-bounds writes.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

removes
removes
removes
removes
removes

References