CVE-2025-21042

HIGH CISA KEV

Published Sep 12, 2025 Modified Nov 12, 2025 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.

CVSS v3.1 Score

8.8

HIGH

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

CISA Known Exploited Vulnerability

This vulnerability is actively exploited in the wild.

Added: Nov 10, 2025 Remediation due: Dec 1, 2025

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All
samsung	android	All

References

Advisories & Patches

https://security.samsungmobile.com/securityUpdate.smsb?year=2025&month=04

Other References

https://unit42.paloaltonetworks.com/landfall-is-new-commercial-grade-android-spyware/ https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-21042

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. It has a CVSS v3.1 base score of 8.8 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2025-21042? +

CVE-2025-21042 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-21042? +

CVE-2025-21042 affects products from samsung, specifically: android. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-21042? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-3298

The method "sock_recvfrom_into()" of "asyncio.ProacterEventLoop" (Windows only) was missing a boundary check for the data buffer when using nbytes parameter. …

CVE-2026-40489

editorconfig-core-c is an EditorConfig core library for use by plugins supporting EditorConfig parsing. Versions up to and including 0.12.10 have …

CVE-2025-3154

Out-of-bounds array write in Xpdf 4.05 and earlier, triggered by an invalid VerticesPerRow value in a PDF shading dictionary.

CVE-2025-4640

Out-of-bounds Write vulnerability in PointCloudLibrary pcl allows Overflow Buffers. Since version 1.14.0, PCL by default uses a zlib installation from …

CVE-2025-5688

We have identified a buffer overflow issue allowing out-of-bounds write when processing LLMNR or mDNS queries with very long DNS …

CVE-2025-49848

An Out-of-bounds Write vulnerability exists within the parsing of PRJ files. The issues result from the lack of proper validation …