What is CVE-2021-30755?

CVE-2021-30755 is a medium-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2021-09-08.

How severe is CVE-2021-30755?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Out-of-bounds Read in Apple macOS

CVE-2021-30755

Processing a maliciously crafted font may result in the disclosure of process memory. This issue is fixed in macOS Big Sur 11.4, tvOS 14.6, watchOS 7.5. An out-of-bounds read was addressed with improved input validation.

Vulnerability class: Buffer Overflow

EPSS: 0.013 (68.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Apple Macos — versions unspecified
Apple Tvos
Apple Watchos

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

product-security@apple.com (x_refsource_MISC, Vendor Advisory)
product-security@apple.com (x_refsource_MISC, Vendor Advisory)
product-security@apple.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-30755?: CVE-2021-30755 is a medium-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2021-09-08.
How severe is CVE-2021-30755?: Medium severity. CVSS v3 base score is 6.5 out of 10.