SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-1814

Processing a maliciously crafted image may lead to arbitrary code execution.

HIGH 7.8EPSS 1.18%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.3, watchOS 7.4. Processing a maliciously crafted image may lead to arbitrary code execution.

CVSS 3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
1.18% probability · 68th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
apple/macos · apple/watchos
Source
product-security@apple.com
EPSS trend
0%3%5%26 October 2026: 1.18%26 October 202626 October 2026

EPSS 1.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.