CVE-2026-20627
MEDIUMCVSS 5.5/10EPSS 0.14%
Last modified
CVE-2026-20627 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. An issue existed in the handling of environment variables. This issue was addressed with improved validation. EPSS estimates a 0.14% chance of exploitation in the next 30 days.
Description
An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Sonoma 14.8.4, macOS Tahoe 26.3, visionOS 26.3, watchOS 26.3. An app may be able to access sensitive user data.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Ipados | < 26.3 |
| Apple | Iphone Os | < 26.3 |
| Apple | Macos | >= 14.0, < 14.8.4 |
| Apple | Macos | >= 26.0, < 26.3 |
| Apple | Visionos | < 26.3 |
| Apple | Watchos | < 26.3 |
References
- https://support.apple.com/en-us/126346Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126348Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126350Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126352Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126353Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2026-20627?
An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Sonoma 14.8.4, macOS Tahoe 26.3, visionOS 26.3, watchOS 26.3. An app may be able to access sensitive user data.
How severe is CVE-2026-20627?
CVE-2026-20627 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.
How do I fix CVE-2026-20627?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2026-20627?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST