Apple iOS/iPadOS up to 14.5.1 WebKit access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$5k-$25k0.00

Summaryinfo

A vulnerability described as critical has been identified in Apple iOS and iPadOS up to 14.5.1. Impacted is an unknown function of the component WebKit. Executing a manipulation can lead to access control. This vulnerability is tracked as CVE-2021-30720. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apple iOS and iPadOS up to 14.5.1 (Smartphone Operating System). It has been declared as critical. This vulnerability affects an unknown code block of the component WebKit. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality.

The weakness was disclosed 05/24/2021 by David Schütz as HT212528 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability was named CVE-2021-30720. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 07/10/2025). It is expected to see the exploit prices for this product increasing in the near future.This vulnerability is assigned to T1068 by the MITRE ATT&CK project. The advisory points out:

A malicious website may be able to access restricted ports on arbitrary servers

The vulnerability scanner Nessus provides a plugin with the ID 241427 (RHEL 7 : webkitgtk4 (RHSA-2025:10364)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 14.6 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

A logic issue was addressed with improved restrictions.

The vulnerability is also documented in the vulnerability database at Tenable (241427). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 241427
Nessus Name: RHEL 7 : webkitgtk4 (RHSA-2025:10364)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: iOS/iPadOS 14.6

Timelineinfo

04/13/2021 🔍
05/24/2021 +41 days 🔍
05/24/2021 +0 days 🔍
05/25/2021 +1 days 🔍
07/10/2025 +1507 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT212528
Researcher: David Schütz
Status: Confirmed

CVE: CVE-2021-30720 (🔍)
GCVE (CVE): GCVE-0-2021-30720
GCVE (VulDB): GCVE-100-175642
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 05/25/2021 12:01
Updated: 07/10/2025 19:17
Changes: 05/25/2021 12:01 (18), 05/25/2021 12:04 (29), 05/27/2021 20:05 (4), 07/10/2025 19:17 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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