Apple macOS up to 14.8.4/15.7.4/26.3 input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$0-$5k2.70-

Summaryinfo

A vulnerability, which was classified as problematic, was found in Apple macOS up to 14.8.4/15.7.4/26.3. This impacts an unknown function. Executing a manipulation can lead to input validation. This vulnerability appears as CVE-2026-20679. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Apple macOS up to 14.8.4/15.7.4/26.3. It has been declared as problematic. This vulnerability affects some unknown functionality. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. CVE summarizes:

The issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. Processing a maliciously crafted file may lead to unexpected app termination.

The advisory is available at support.apple.com. This vulnerability was named CVE-2026-20679 since 11/11/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. 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 $0-$5k at the moment (estimation calculated on 08/21/2026).

Upgrading to version 14.8.5, 15.7.5 or 26.4 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-63776). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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: Input validation
CWE: CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: macOS 14.8.5/15.7.5/26.4

Timelineinfo

11/11/2025 CVE reserved
08/21/2026 +282 days Advisory disclosed
08/21/2026 +0 days VulDB entry created
08/21/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2026-20679 (🔒)
GCVE (CVE): GCVE-0-2026-20679
GCVE (VulDB): GCVE-100-394018
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 08/21/2026 02:59
Updated: 08/21/2026 06:27
Changes: 08/21/2026 02:59 (55), 08/21/2026 06:27 (1)
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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