CVE-2025-21042

Name: CVE-2025-21042
Creator: NVD / NIST
Published: 2025-09-12T08:15:44.743+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 11.61%

Last modified Jun 17, 2026

CVE-2025-21042 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Out-of-bounds write in libimagecodec.quram.so prior to SMR Apr-2025 Release 1 allows remote attackers to execute arbitrary code.. CISA has confirmed active exploitation in the wild. EPSS estimates a 11.61% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

11.61%

95.5th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Dec 1, 2025.

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Samsung	Android	13.0
Samsung	Android	14.0
Samsung	Android	15.0

References

https://security.samsungmobile.com/securityUpdate.smsb?year=2025&month=04Vendor Advisory
https://unit42.paloaltonetworks.com/landfall-is-new-commercial-grade-android-spyware/Technical Description, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-21042US Government Resource

Timeline

Published: Sep 12, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-21042?

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

How severe is CVE-2025-21042?

CVE-2025-21042 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 11.61% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2025-21042?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-21042?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST