CVE-2025-21042 on CISA KEV

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

01What CISA says about this vulnerability

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

02Required action — verbatim from 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.

03Notes & references

• security.samsungmobile.com — https://security.samsungmobile.com/securityUpdate.smsb?year=2025&month=04

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
Samsung Mobile	Samsung Mobile Devices	SMR Apr-2025 Release in Android 13, 14, 15

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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