CVE-2026-20638
MEDIUMCVSS 5.5/10EPSS 0.14%
Last modified
CVE-2026-20638 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A logic issue was addressed with improved checks. This issue is fixed in iOS 26.3 and iPadOS 26.3. EPSS estimates a 0.14% chance of exploitation in the next 30 days.
Description
A logic issue was addressed with improved checks. This issue is fixed in iOS 26.3 and iPadOS 26.3. A user with Live Caller ID app extensions turned off could have identifying information leaked to the extensions.
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 |
References
- https://support.apple.com/en-us/126346Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-20638?
A logic issue was addressed with improved checks. This issue is fixed in iOS 26.3 and iPadOS 26.3. A user with Live Caller ID app extensions turned off could have identifying information leaked to the extensions.
How severe is CVE-2026-20638?
CVE-2026-20638 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-2026-20638?
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-2026-20638?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST