Is CVE-2025-21042 actively exploited?

Yes. CVE-2025-21042 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2025-21042 be exploited remotely?

The attack vector of CVE-2025-21042 has not been classified yet.

What is the CVSS score of CVE-2025-21042?

CVE-2025-21042 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2025-21042

HIGHCISA KEVIN THE WILD

CVE-2025-21042

Published: November 10, 2025

EPSS:1.72%probability of exploitation in 30 daysPercentile:82.1th

Official Description

Samsung mobile devices contain an out-of-bounds write vulnerability in libimagecodec.quram.so. This vulnerability could allow remote attackers to execute arbitrary code.

NVD Source

CISA KEV Advisory

Samsung Mobile Devices Out-of-Bounds Write Vulnerability

Samsung mobile devices contain an out-of-bounds write vulnerability in libimagecodec.quram.so. This vulnerability could allow remote attackers to execute arbitrary code.

Added to KEV: 2025-11-10Federal patch deadline: 2025-12-01

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.

Risk Analysis

This high-severity out-of-bounds write vulnerability in libimagecodec.quram.so on Samsung mobile devices allows remote attackers to execute arbitrary code. Its inclusion in CISA's KEV catalog and active exploitation in the wild make it a critical concern, despite a low EPSS score of 0.01718.

This vulnerability is actively being exploited in the wild, as confirmed by its presence in CISA's KEV catalog. Remote attackers can leverage this flaw to execute arbitrary code.

Recommended Action

Apply the latest security updates and patches for Samsung mobile devices to address the out-of-bounds write vulnerability. Ensure all device firmware is kept up to date.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2025-21042 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2025-21042 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.