What is CVE-2021-30708?

CVE-2021-30708 is a high-severity vulnerability in Apple iOS And Ipados, classified under Out-of-bounds Read. CVSS score: 7.8/10. Published 2021-09-08.

How severe is CVE-2021-30708?

High severity. CVSS v3 base score is 7.8 out of 10.

Out-of-bounds Read in Apple iOS And Ipados

CVE-2021-30708

An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 Catalina, Security Update 2021-004 Mojave, iOS 14.6 and iPadOS 14.6. Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution.

Vulnerability class: Buffer Overflow

Published 2021-09-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.4th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Apple iOS And Ipados — versions unspecified
Apple Ipados
Apple Iphone OS
Apple macOS — versions unspecified
Apple Mac OS X — versions 10.14.6, 10.15.7

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

support.apple.com/en-us/HT212528 (Release Notes, Vendor Advisory)
support.apple.com/en-us/HT212529 (Release Notes, Vendor Advisory)
support.apple.com/en-us/HT212530 (Release Notes, Vendor Advisory)
support.apple.com/en-us/HT212531 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2021-30708?: CVE-2021-30708 is a high-severity vulnerability in Apple iOS And Ipados, classified under Out-of-bounds Read. CVSS score: 7.8/10. Published 2021-09-08.
How severe is CVE-2021-30708?: High severity. CVSS v3 base score is 7.8 out of 10.