How to check if you are exposed to CVE-2021-25370
- Find every Samsung Mobile Devices system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
- Compare each version with the fixed versions in the vendor advisory below. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
- Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2021-25370.
US federal agencies had to fix this by 2022-11-29. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.
Timeline
- · Added to CISA's Known Exploited Vulnerabilities catalog
- · Fix-by date for US federal agencies, passed 1,433 days ago
Vendor advisories and fixes
Weakness type
More exploited Samsung vulnerabilities
CISA lists 15 exploited Samsung vulnerabilities. The closest matches:
- CVE-2025-21042Samsung Mobile Devices Out-of-Bounds Write VulnerabilityAdded 2025-11-10
- CVE-2025-21043Samsung Mobile Devices Out-of-Bounds Write VulnerabilityAdded 2025-10-02
- CVE-2022-22265Samsung Mobile Devices Use-After-Free VulnerabilityAdded 2023-09-18
- CVE-2021-25489Samsung Mobile Devices Improper Input Validation VulnerabilityAdded 2023-06-29
- CVE-2021-25487Samsung Mobile Devices Out-of-Bounds Read VulnerabilityAdded 2023-06-29
- CVE-2021-25395Samsung Mobile Devices Race Condition VulnerabilityAdded 2023-06-29
- CVE-2021-25394Samsung Mobile Devices Race Condition VulnerabilityAdded 2023-06-29
- CVE-2021-25372Samsung Mobile Devices Improper Boundary Check VulnerabilityAdded 2023-06-29
Keep going
Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.