CVE-2025-21043
critical CISA KEVSamsung Mobile Devices Out-of-Bounds Write Vulnerability
Vendor / product: Samsung — Mobile Devices
Out-of-bounds write in libimagecodec.quram.so prior to SMR Sep-2025 Release 1 allows remote attackers to execute arbitrary code.
CVSS
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2025-09-12 08:15
Modified: 2026-10-08 12:54
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Listed in CISA KEV
Added 2025-10-02 · due 2025-10-23
Known ransomware use: Unknown
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected products
samsung / android 13.0, 14.0, 15.0, 16.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://security.samsungmobile.com/securityUpdate.smsb?year=2025&month=09 mobile.security@samsung.com
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-21043 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
CISA KEV — fetched 2026-10-27 06:50 UTC · record ↗
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗