Path Traversal in Apple iOS And Ipados

CVE-2021-1740

A parsing issue in the handling of directory paths was addressed with improved path validation. This issue is fixed in Security Update 2021-002 Catalina, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. A local user may be able to modify protected parts of the file system.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.010 (60.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-1740?
CVE-2021-1740 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Path Traversal. CVSS score: 5.5/10. Published 2021-09-08.
How severe is CVE-2021-1740?
Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2021-1740 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.