Auth bypass in Apple iOS And Ipados

CVE-2021-1863

An issue existed with authenticating the action triggered by an NFC tag. The issue was addressed with improved action authentication. This issue is fixed in iOS 14.5 and iPadOS 14.5. A person with physical access to an iOS device may be able to place phone calls to any phone number.

Vulnerability class: Broken Authentication

Published · last modified .

CVSS v3 metric

CVSS v3 base score 2.4 (Low). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.9th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-1863: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-1863?
CVE-2021-1863 is a low-severity vulnerability in Apple iOS And Ipados, classified under Improper Authentication. CVSS score: 2.4/10. Published 2021-09-08.
How severe is CVE-2021-1863?
Low severity. CVSS v3 base score is 2.4 out of 10.