CVE-2026-21113 Samsung CVE debrief

Who should care

Defenders responsible for managing and securing Visual Voicemail installations, particularly those using versions prior to 20.1.00.05, should assess exposure and prioritize updates.

Why it matters

CVE-2026-21113 allows local attackers to initiate calls without proper permission in Visual Voicemail prior to version 20.1.00.05, requiring defenders to verify exposure and update vulnerable installations.

• Local attackers may initiate calls without proper permission, potentially leading to unauthorized communication
• Defenders need to verify exposure in their Visual Voicemail installations and update to version 20.1.00.05 or later

Technical summary

The Visual Voicemail application prior to version 20.1.00.05 improperly exports android application components, allowing local attackers to initiate calls without proper permission. This vulnerability requires defenders to verify exposure and update vulnerable installations to version 20.1.00.05 or later. The CVE record and NVD entry provide details on the improper export of android application components in Visual Voicemail prior to version 20.1.00.05.

Defensive priority

Defenders should prioritize verifying exposure in Visual Voicemail versions prior to 20.1.00.05.

Recommended defensive actions

• Verify Visual Voicemail version and update to 20.1.00.05 or later if necessary
• Review and restrict access to sensitive components
• Monitor for suspicious activity related to local attackers

Evidence notes

The CVE record and NVD entry provide details on the improper export of android application components in Visual Voicemail prior to version 20.1.00.05.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.