# CVE-2021-25489: Samsung Mobile Devices Improper Input Validation Vulnerability

Source: https://junglewise.ai/threats/cve-2021-25489-samsung-mobile-devices-improper-input-validation-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-06-29. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2021-25489 · Severity: critical · CVSS 5.5 · Exploited in the wild · Published 2023-06-29

Samsung mobile devices contain an improper input validation vulnerability in the modem interface driver. This flaw results in a format string bug that can be triggered if radio permission is gained, leading to a kernel panic and denial of service.

Technologies: [Samsung Mobile Devices](https://junglewise.ai/threats/technologies/mobile-devices). Vendors: [Samsung](https://junglewise.ai/threats/vendors/samsung).

## Quick answers

**Is CVE-2021-25489 exploited in the wild?** Yes. CVE-2021-25489 is known to be exploited in the wild, first recorded on 29 June 2023. Treat it as urgent.

**How severe is CVE-2021-25489?** Critical severity, with a CVSS score of 5.5, published 29 June 2023.

**Which products and versions are affected?** Samsung Android Prior to SMR Oct-2021 Release 1 (Versions 8.1, 9.0, 10.0, 11.0).

**Is there a fix for CVE-2021-25489?** A patch was published on 2021-10-01: SMR Oct-2021 Release 1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2021-25489 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2021-25489?** Check whether you run Samsung Mobile Devices. 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 Prior to SMR Oct-2021 Release 1 (Versions 8.1, 9.0, 10.0, 11.0)

## Timeline

- 2021-10-06: disclosed: NVD Published Date
- 2021-10-01: patched: SMR Oct-2021 Release 1
- 2023-06-29: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

## Related threats

- [Samsung Mobile Devices out-of-bounds write in libimagecodec.quram.so](https://junglewise.ai/threats/cve-2025-21042-samsung-mobile-devices-out-of-bounds-write-in-libimagecodec-quram)
- [Samsung Mobile Devices out-of-bounds write in libimagecodec.quram.so](https://junglewise.ai/threats/cve-2025-21043-samsung-mobile-devices-out-of-bounds-write-in-libimagecodec-quram)
- [Samsung Mobile Devices Use-After-Free Vulnerability](https://junglewise.ai/threats/cve-2022-22265-samsung-mobile-devices-use-after-free-vulnerability)
- [Samsung Mobile Devices Unspecified Vulnerability](https://junglewise.ai/threats/cve-2021-25371-samsung-mobile-devices-unspecified-vulnerability)
- [Samsung Mobile Devices Improper Boundary Check Vulnerability](https://junglewise.ai/threats/cve-2021-25372-samsung-mobile-devices-improper-boundary-check-vulnerability)