CVE-2025-21043
KEVSamsung Mobile Devices Out-of-Bounds Write Vulnerability
Description
Samsung mobile devices contain an out-of-bounds write vulnerability in libimagecodec.quram.so which allows remote attackers to execute arbitrary code.
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HPublishedSep 12, 2025
Last modifiedOct 8, 2026
Added to KEVOct 2, 2025
Remediation dueOct 23, 2025
References
- security.samsungmobile.com/securityUpdate.smsb?year=2025&month=09Vendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-21043US Government Resource
0 recent articles mention this CVE
74
Risk assessment · High
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 368 days
- CVSS
- 8.8 HIGH
- EPSS (30-day exploit probability)
- 2.2% · top 17% of all CVEs
- Weakness
- CWE-787
- Attack vector
- Network, remotely reachable
Recommended actions
- 1.Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.