VulnerabilityAnalyzed

CVE-2025-21043

Samsung Mobile Devices Out-of-Bounds Write Vulnerability

KEVCRITICAL 9.8EPSS 1.91%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 23 October 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Out-of-bounds write in libimagecodec.quram.so prior to SMR Sep-2025 Release 1 allows remote attackers to execute arbitrary code.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 1.91% probability · 79th percentile
CISA KEV: Listed 2 October 2025 · due 23 October 2025
Weakness: CWE-787
Affected: samsung/android
Source: mobile.security@samsung.com

CISA notes

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://security.samsungmobile.com/securityUpdate.smsb?year=2025&month=09 ; https://nvd.nist.gov/vuln/detail/CVE-2025-21043

References

https://security.samsungmobile.com/securityUpdate.smsb?year=2025&month=09Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-21043US Government Resource

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.