Apple macOS up to 26.2 App temp file

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Apple macOS up to 26.2. This affects an unknown part of the component App. The manipulation leads to temp file. This vulnerability is listed as CVE-2026-20618. The attack must be carried out locally. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple macOS up to 26.2. It has been rated as problematic. This issue affects some unknown processing of the component App. The manipulation with an unknown input leads to a temp file vulnerability. Using CWE to declare the problem leads to CWE-377. Creating and using insecure temporary files can leave application and system data vulnerable to attack. Impacted is confidentiality. The summary by CVE is:

An issue was addressed with improved handling of temporary files. This issue is fixed in macOS Tahoe 26.3. An app may be able to access user-sensitive data.

It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2026-20618 since 11/11/2025. The exploitation is known to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 298694 (macOS 26.x < 26.3 Multiple Vulnerabilities (126348)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 26.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (298694). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

ADP CISA Base Score: 5.5
ADP CISA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Temp file
CWE: CWE-377
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 298694
Nessus Name: macOS 26.x < 26.3 Multiple Vulnerabilities (126348)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: macOS 26.3

Timelineinfo

11/11/2025 CVE reserved
02/12/2026 +93 days Advisory disclosed
02/12/2026 +0 days VulDB entry created
02/20/2026 +8 days VulDB entry last update

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2026-20618 (🔒)
GCVE (CVE): GCVE-0-2026-20618
GCVE (VulDB): GCVE-100-345743
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 02/12/2026 07:04
Updated: 02/20/2026 16:29
Changes: 02/12/2026 07:04 (56), 02/16/2026 13:34 (2), 02/17/2026 15:01 (11), 02/19/2026 03:40 (11), 02/20/2026 16:29 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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