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

criticalknown exploitedpublic exploitCVE-2025-21042
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Samsung mobile devices contain an out-of-bounds write vulnerability in libimagecodec.quram.so. This vulnerability could allow remote attackers to execute arbitrary code.

CSIRTS triage

vendor: SamsungMemory corruption
What
An out-of-bounds write vulnerability could allow remote attackers to execute arbitrary code.
Who is affected
Users of Samsung mobile devices are affected.
Urgency
Immediate remediation is necessary as the vulnerability is critical and actively exploited.
Action
Update Samsung mobile devices to the latest firmware.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2025-11-10
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-21042

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2025-21042coverage & exploitation statusNVD · CVE.org

Recent advisories for Samsung Mobile Devices

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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