Apple iOS/iPadOS up to 15.4.1 Security certificate validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple iOS and iPadOS up to 15.4.1. It has been classified as problematic. Impacted is an unknown function of the component Security. The manipulation leads to certificate validation. This vulnerability is documented as CVE-2022-26766. The attack can be initiated remotely. Additionally, an exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apple iOS and iPadOS up to 15.4.1 (Smartphone Operating System). It has been rated as problematic. This issue affects an unknown code block of the component Security. The manipulation with an unknown input leads to a certificate validation vulnerability. Using CWE to declare the problem leads to CWE-295. The product does not validate, or incorrectly validates, a certificate. Impacted is confidentiality, integrity, and availability.

The weakness was released 05/16/2022 by Linus Henze as HT213258 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2022-26766. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1587.003 according to MITRE ATT&CK. The advisory points out:

A malicious app may be able to bypass signature validation

The exploit is available at packetstormsecurity.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k.

Upgrading to version 15.5 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

A certificate parsing issue was addressed with improved checks.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.6
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: iOS/iPadOS 15.5

Timelineinfo

03/08/2022 🔍
05/16/2022 +68 days 🔍
05/16/2022 +0 days 🔍
05/17/2022 +1 days 🔍
05/31/2025 +1109 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT213258
Researcher: Linus Henze
Status: Confirmed

CVE: CVE-2022-26766 (🔍)
GCVE (CVE): GCVE-0-2022-26766
GCVE (VulDB): GCVE-100-200051
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 05/17/2022 16:11
Updated: 05/31/2025 00:08
Changes: 05/17/2022 16:11 (19), 05/17/2022 16:14 (28), 05/24/2022 08:32 (1), 05/28/2022 08:26 (1), 06/12/2024 19:10 (23), 05/31/2025 00:08 (18)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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