Cyber Posture

CWE · MITRE source

CWE-1021Improper Restriction of Rendered UI Layers or Frames

Abstraction: Base · CVEs in our corpus: 376

The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain, which can lead to user confusion about which interface the user is interacting with.

A web application is expected to place restrictions on whether it is allowed to be rendered within frames, iframes, objects, embed or applet elements. Without the restrictions, users can be tricked into interacting with the application when they were not intending to.

Last updated: 09 May 2026 03:25 UTC

NIST 800-53 r5 controls that address this weakness (0)AI

Control Title Family Why it addresses this CWE
No NIST controls proposed yet.

Top CVEs of this weakness type, ranked by Risk Priority

CVE Risk CVSS EPSS Published
CVE-2023-13624.46.10.53552023-03-13
CVE-2021-211323.09.60.18452021-02-09
CVE-2016-24962.09.80.00312016-06-13
CVE-2021-232742.09.80.00242021-03-23
CVE-2021-430482.09.80.00282021-11-16
CVE-2021-211111.99.60.00452021-01-08
CVE-2023-418971.98.80.01872023-10-19
CVE-2018-184961.88.80.00422019-02-28
CVE-2015-56861.88.80.00142020-02-27
CVE-2021-228661.88.80.00202021-05-14
CVE-2021-37341.88.80.00152021-08-26
CVE-2022-31671.88.80.00402022-09-08
CVE-2024-100041.89.10.00322024-10-15
CVE-2019-163711.78.20.00262019-09-16
CVE-2021-446831.78.20.00282022-03-25
CVE-2026-00071.78.60.00002026-03-02
CVE-2018-94581.67.80.00072018-11-06
CVE-2018-95241.67.80.00022018-11-14
CVE-2020-00511.67.80.00032020-03-10
CVE-2020-03941.67.80.00012020-09-17
CVE-2020-03871.67.80.00032020-09-17
CVE-2020-03661.67.80.00042020-09-17
CVE-2020-131191.68.10.00302020-09-24
CVE-2020-270591.67.80.00042021-01-11
CVE-2021-211391.66.50.04972021-02-09