What is the CVSS score of CVE-2026-20627?

CVE-2026-20627 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of Apple are affected by CVE-2026-20627?

CVE-2026-20627 presents moderate security risk, a input validation vulnerability rated CVSS 5.5. Exploitation could compromise the security of affected deployments.

How to fix or mitigate CVE-2026-20627?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Apple CVE-2026-20627

MEDIUM

Improper Input Validation (CWE-20)

2026-02-11 product-security@apple.com

Apple Information Disclosure

5.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

CVE Published

Feb 11, 2026 - 23:16 nvd

MEDIUM 5.5

DescriptionCVE.org

An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in watchOS 26.3, macOS Tahoe 26.3, macOS Sonoma 14.8.4, visionOS 26.3, iOS 26.3 and iPadOS 26.3. An app may be able to access sensitive user data.

AnalysisAI

Insufficient validation of environment variables in Apple's macOS, iOS, iPadOS, and visionOS allows local applications to read sensitive user data without user interaction. An attacker with the ability to run code on the affected device could exploit this to access confidential information through improperly sanitized environment variable handling. A patch is not currently available for this medium-severity vulnerability.

Technical ContextAI

Classified as CWE-20 (Improper Input Validation). Affects Ipados. An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in watchOS 26.3, macOS Tahoe 26.3, macOS Sonoma 14.8.4, visionOS 26.3, iOS 26.3 and iPadOS 26.3. An app may be able to access sensitive user data.