CVE-2025-21042 Samsung Mobile Devices Out-of-Bounds Write Vulnerability

Active exploitation observed

· CISA KEV catalogue

Required action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Ransomware campaigns Not observed so far

Weakness CWE-787

Description

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

Affected products and versions

Product	Affected versions	Fixed in
Samsung Mobile Devices	Versions not published

Other CVEs of Samsung Mobile Devices

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CVE-2026-21126 Improper input validation in getting cover image in libsimba.heifdec.media.samsung.so prior to SMR Oct-2026 Release 1… 6.9 Medium CVE-2026-21125 Improper input validation in parsing sheifd in libsimba.heifdec.media.samsung.so prior to SMR Oct-2026 Release 1… 8.6 High CVE-2026-21124 Improper input validation in getting cover image in libsimba.heifdec.media.samsung.so prior to SMR Oct-2026 Release 1… 8.6 High CVE-2026-21123 Improper privilege management in Locksettings prior to SMR Oct-2026 Release 1 allows local privileged attackers with… 6.7 Medium