What is CVE-2023-23494?

CVE-2023-23494 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.3/10. Published 2023-05-08.

How severe is CVE-2023-23494?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Buffer overflow in Apple iOS And Ipados

CVE-2023-23494

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 16.4 and iPadOS 16.4. A user in a privileged network position may be able to cause a denial-of-service.

Vulnerability class: Buffer Overflow

Published 2023-05-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (47.6th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Apple iOS And Ipados — versions unspecified
Apple Ipados
Apple Iphone OS

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

support.apple.com/en-us/HT213676 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2023-23494?: CVE-2023-23494 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.3/10. Published 2023-05-08.
How severe is CVE-2023-23494?: Medium severity. CVSS v3 base score is 5.3 out of 10.