Full Report
The Cybersecurity and Infrastructure Security Agency (CISA) has added a critical remote code execution vulnerability affecting Samsung mobile devices to its Known Exploited Vulnerabilities (KEV) catalog, signaling active exploitation in the wild. Tracked as CVE-2025-21042, this zero-day flaw resides in Samsung’s libimagecodec library. It could allow attackers to bypass security protections and execute arbitrary code […] The post CISA Issues Alert on Samsung 0-Day RCE Flaw Actively Exploited in Attacks appeared first on GBHackers Security | #1 Globally Trusted Cyber Security News Platform.
Analysis Summary
# Vulnerability: Samsung Mobile Remote Code Execution via Image Processing Library
## CVE Details
- CVE ID: CVE-2025-21042
- CVSS Score: N/A (Described as 'Critical')
- CWE: CWE-787 (Improper Restriction of Operations within the Bounds of a Memory Buffer)
## Affected Systems
- Products: Samsung Mobile Devices
- Versions: Not specified in detail, but applies to devices containing the vulnerable library component.
- Configurations: Devices processing specially crafted image files.
## Vulnerability Description
This is a zero-day Remote Code Execution (RCE) vulnerability located in Samsung’s `libimagecodec.quram.so` library, which is responsible for processing image files. The flaw is specifically an **Out-of-Bounds Write** weakness. Successful exploitation allows an attacker to write data beyond the intended memory boundaries, which can corrupt memory structures leading to the execution of arbitrary code with the privileges of the vulnerable application.
## Exploitation
- Status: Exploited in the wild (Added to CISA KEV Catalog)
- Complexity: Low (Implied by RCE and remote nature, though exploitation requires crafting specific image files).
- Attack Vector: Network (via specially designed image files)
## Impact
- Confidentiality: High (Potential for unauthorized access and data theft)
- Integrity: High (Ability to execute arbitrary code and potentially compromise the system)
- Availability: High (Potential for application crash or device compromise)
## Remediation
### Patches
- Specific patch versions are not listed in the source, but users must apply security patches from Samsung immediately.
- Remediation Deadline (per CISA BOD 22-01 compliance): December 1, 2025.
### Workarounds
- Review installed applications for suspicious activity.
- Monitor device behavior for signs of compromise.
- Implement network segmentation and strict device management policies (especially for enterprise/critical infrastructure environments).
## Detection
- Indicators of Compromise: Signs of compromise related to arbitrary code execution, such as unexpected application behavior or elevated resource usage following image file processing.
- Detection Methods and Tools: Security teams should monitor network traffic for anomalous file transfers or focus on applications processing untrusted image files.
## References
- Vendor Advisories: Samsung Security Advisories (Must be searched directly via Samsung channels).
- CISA KEV Catalog: cisa.gov/known-exploited-vulnerabilities-catalog (Defanged: cisa.gov/known-exploited-vulnerabilities-catalog)
- NVD Detail: nvd.nist.gov/vuln/detail/CVE-2025-21042 (Defanged: nvd.nist.gov/vuln/detail/CVE-2025-21042)