SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2020-3906

A maliciously crafted application may be able to bypass code signing enforcement.

HIGH 7.8EPSS 0.98%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Catalina 10.15.4. A maliciously crafted application may be able to bypass code signing enforcement.

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
0.98% probability · 62th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
apple/mac os x
Source
product-security@apple.com
EPSS trend
0%3%5%26 October 2026: 0.98%26 October 202626 October 2026

EPSS 1.0% 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.