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CVE-2021-30862

MediumPublished

A validation issue was addressed with improved input sanitization. This issue is fixed in iTunes U 3.8.3. Processing a maliciously crafted URL may lead to...

Published: Aug 24, 2021
Updated: Aug 3, 2024
Assigning CNA: apple
Evidence observed: Aug 8, 2026

Primary CVSS

6.1/ 10Medium

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS probability estimate

1.8%

Low · next 30 days

Percentile: 77.1%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

A validation issue was addressed with improved input sanitization. This issue is fixed in iTunes U 3.8.3. Processing a maliciously crafted URL may lead to arbitrary javascript code execution.

Sources

CVE-2021-30862PoC
Write-up and proof of concepts for CVE-2021-30862, 1-click RCE bug in iOS iTunes U

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