# CVE-2026-21023: Insufficient verification of data authenticity in PackageManagerService prior to SMR Mar-2026 Release 1 allows local…

Source: https://junglewise.ai/threats/cve-2026-21023-insufficient-verification-of-data-authenticity-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-29  
License: CC BY 4.0 with a link back

CVE-2026-21023 · Severity: medium · CVSS 5.5 · Published 2026-04-29

Insufficient verification of data authenticity in PackageManagerService prior to SMR Mar-2026 Release 1 allows local attackers to modify the installation restriction of specific application.

Technologies: [Samsung Android](https://junglewise.ai/threats/technologies/samsung-android). Vendors: [Samsung](https://junglewise.ai/threats/vendors/samsung).

## Quick answers

**Is CVE-2026-21023 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-21023 being exploited in the wild.

**How severe is CVE-2026-21023?** Medium severity, with a CVSS score of 5.5, published 29 April 2026.

**Which products and versions are affected?** Samsung Android. The advisory does not name versions.

**Is there a fix for CVE-2026-21023?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-21023?** Check whether you run Samsung Android. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Samsung Android

## Related threats

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- [Insecure default configuration in USB connection mode prior to SMR Nov-2025 Release 1 allows privileged physical…](https://junglewise.ai/threats/cve-2025-21073-insecure-default-configuration-in-usb-connection-mode-prior-to)