What is CVE-2021-30959?

CVE-2021-30959 is a medium-severity vulnerability in Apple macOS, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.5/10. Published 2021-08-24.

How severe is CVE-2021-30959?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in Apple macOS

CVE-2021-30959

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in Security Update 2021-008 Catalina, macOS Big Sur 11.6.2. Parsing a maliciously crafted audio file may lead to disclosure of user information.

Vulnerability class: Buffer Overflow

EPSS: 0.008 (54.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Apple Macos — versions unspecified
Apple Mac_os_x — versions 10.15.7

Weakness classification (CWE)

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

References

product-security@apple.com (x_refsource_MISC)
product-security@apple.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-30959?: CVE-2021-30959 is a medium-severity vulnerability in Apple macOS, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.5/10. Published 2021-08-24.
How severe is CVE-2021-30959?: Medium severity. CVSS v3 base score is 5.5 out of 10.