Public proof of conceptFix available

CVE-2023-23531

Q: Is CVE-2023-23531 actively exploited?

Active exploitation of CVE-2023-23531 has not been confirmed. Its EPSS score was 1.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2023-23531?

CVE-2023-23531 has a CVSS v3 base score of 8.6 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

A public proof of concept exists; no exploitation attested.

Published2023-02-27
Fixed in16.3
WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The issue was addressed with improved memory handling. This issue is fixed in macOS Ventura 13.2, iOS 16.3 and iPadOS 16.3. An app may be able to execute arbitrary code out of its sandbox or with certain elevated privileges.

Timeline

dates in UTC

2023-02-2720:15CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-23531?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-23531?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Apple ipados

Branch	Affected	Fixed in	Source
16.3	< 16.3	16.3	NVD

Apple iphone os

Branch	Affected	Fixed in	Source
16.3	< 16.3	16.3	NVD

Apple macos

Branch	Affected	Fixed in	Source
13.2	< 13.2	13.2	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Apple ipados to 16.3

Advisories and patches

support.apple.comVendor Advisory
support.apple.comVendor Advisory

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 1 repository, unverifiedDarthOCE/MonkeyJB

Sources

CISA-ADPSSVC decisionnone2025-03-11
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.18.62025-03-11
NVDCVSS 3.18.6read 2026-10-23
CISA-ADPweakness (CWE)CWE-7872025-03-11
FIRST EPSSEPSS score1.8 %2026-10-22
PoC-in-GitHubproof of concept1read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Published: 2023-02-27
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-23531?

Is CVE-2023-23531 actively exploited?

Active exploitation of CVE-2023-23531 has not been confirmed. Its EPSS score was 1.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-23531?

CVE-2023-23531 has a CVSS v3 base score of 8.6 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

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