How severe is CVE-2025-21042?

CVE-2025-21042 has a CVSS score of 8.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2025-21042?

Affected package information for CVE-2025-21042 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2025-21042?

No fixed version has been published for CVE-2025-21042 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2025-21042 actively exploited in the wild?

No public exploit code has been indexed for CVE-2025-21042 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2025-21042?

CVE-2025-21042 has an EPSS (Exploit Prediction Scoring System) score of 4.4%, placing it in the 89th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

Is CVE-2025-21042 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2025-21042 (Samsung Mobile Devices Out-of-Bounds Write Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2025-11-10. CISA required all US federal civilian agencies to remediate this vulnerability by 2025-12-01. The required action was: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2025-21042?

CVE-2025-21042 is classified as Out-of-bounds Write (CWE-787). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2025-21042?

CVE-2025-21042 affects samsung android (3 versions, e.g. 13.0, 14.0, 15.0). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2025-21042 published, and has it been updated?

CVE-2025-21042 was published on September 12, 2025 and was last updated on November 12, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2025-11-10 — agencies required to remediate by 2025-12-01

CVE-2025-21042

HIGH

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

Published

Sep 12, 2025

Updated

Nov 12, 2025

Affected

0 pkgs

Patched

None yet

Exploits

None indexed

EPSS Exploitation Probability

via FIRST.org ↗

4.4%probability of exploitation in next 30 days

Lower Risk89th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

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

1 product · 86 configurations

androidsamsung

3 versions

13.014.015.0

Frequently Asked Questions

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

O3 Security · Impact-Aware SCA

Is CVE-2025-21042 in your stack?

O3 detects CVE-2025-21042 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works