What is CVE-2023-38590?

CVE-2023-38590 is a high-severity vulnerability in Apple iOS And Ipados, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2023-07-28.

How severe is CVE-2023-38590?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2023-38590 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Apple iOS And Ipados

CVE-2023-38590

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in watchOS 9.6, macOS Big Sur 11.7.9, iOS 15.7.8 and iPadOS 15.7.8, macOS Monterey 12.6.8, tvOS 16.6, iOS 16.6 and iPadOS 16.6, macOS Ventura 13.5. A remote user may be able to cause unexpected system termination or corrupt kernel memory.

Vulnerability class: Buffer Overflow

Published 2023-07-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (69.5th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Apple iOS And Ipados — versions unspecified
Apple Ipados
Apple Iphone OS
Apple macOS — versions unspecified
Apple tvOS — versions unspecified
Apple watchOS — versions unspecified

Weakness classification (CWE)

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

Public proof-of-concept exploits

jp-cpe/retrieve-cvss-scores

References

support.apple.com/en-us/HT213846 (Vendor Advisory)
support.apple.com/en-us/HT213841 (Vendor Advisory)
support.apple.com/en-us/HT213843 (Vendor Advisory)
support.apple.com/en-us/HT213842 (Vendor Advisory)
support.apple.com/en-us/HT213845 (Vendor Advisory)
support.apple.com/en-us/HT213844 (Vendor Advisory)
support.apple.com/en-us/HT213848 (Vendor Advisory)
support.apple.com/kb/HT213843 (Vendor Advisory)
support.apple.com/kb/HT213844 (Vendor Advisory)
support.apple.com/kb/HT213841 (Vendor Advisory)

Frequently asked questions

What is CVE-2023-38590?: CVE-2023-38590 is a high-severity vulnerability in Apple iOS And Ipados, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2023-07-28.
How severe is CVE-2023-38590?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2023-38590 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.