CVE-2025-62818 is a critical vulnerability affecting multiple Samsung Exynos processors, including the Exynos 980, 990, 850, 1080, 2100, and several modem versions. The vulnerability arises from an out-of-bounds write due to a mismatch between the TP-UDHI and UDL values when processing an SMS TP-UD packet. With a CVSS score of 9.8, this vulnerability poses a significant threat, enabling attackers to execute arbitrary code or cause unexpected behaviors.
The severity of this vulnerability is classified as critical, highlighting its potential impact on affected systems. Risk to organizations includes unauthorized access, data corruption, and service disruptions, making immediate action necessary to secure devices against potential exploitation.
Currently, there are no known public exploits associated with CVE-2025-62818, however, the critical nature of the vulnerability warrants prompt attention. Organizations should prioritize patching immediately to mitigate any risks.
The vulnerability was published on April 7, 2026, and has been analyzed thoroughly. Affected organizations should stay updated on any patches or advisories released by Samsung to ensure their systems remain secure.
Vulnerability Details
The official description of CVE-2025-62818 states that it affects Samsung Mobile Processor, Wearable Processor, and Modem Exynos products. An out-of-bounds write can lead to severe consequences, such as arbitrary code execution and system instability.
The CVSS score of 9.8 reflects the critical severity of this vulnerability, which can be exploited over the network with low complexity and requires no privileges or user interaction. The impacts on confidentiality, integrity, and availability are all classified as high.
Technical Analysis
The root cause of CVE-2025-62818 lies in improper validation of input data when processing SMS packets. This flaw enables attackers to exploit the vulnerability through network access, potentially leading to unauthorized code execution.
The attack vector is network-based, meaning that attackers do not need physical access to the device to exploit this vulnerability. The attack complexity is low, as no special conditions are required to execute the attack. Additionally, no privileges are necessary, and user interaction is not required.
The vulnerability impacts the confidentiality, integrity, and availability of affected systems, emphasizing the critical need for swift remediation.
Risk & Impact Analysis
Real-world risk associated with CVE-2025-62818 is significant. Organizations using affected Samsung Exynos processors are at risk for data breaches, unauthorized access, and operational disruptions due to potential exploitation. The blast radius includes any device utilizing the vulnerable processors, which may lead to widespread impacts across organizations.
Given the critical CVSS score and the potential for exploitation, organizations should prioritize this vulnerability in their patch management cycles. Immediate action is necessary to protect sensitive data and maintain operational integrity.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The following versions of Samsung Exynos processors are affected by CVE-2025-62818: Exynos 980, 990, 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, 1580, 2500, 9110, W920, W930, W1000, Modem 5123, Modem 5300, and Modem 5400. Organizations running these processors should take immediate action to patch or mitigate.
Mitigation & Remediation
Organizations should monitor for updates from Samsung regarding patches and upgrades for affected Exynos firmware versions. In the absence of a patch, consider network segmentation and strict access controls to mitigate potential exploitation. Regular vulnerability assessments and penetration testing can help identify weaknesses and validate remediation effectiveness through penetration testing strategies.
Detection Guidance
To detect potential exploitation of CVE-2025-62818, organizations should monitor logs for unusual SMS traffic patterns, unexpected system behaviors, and anomalies in application responses. Implementing network signatures that correspond to known exploit attempts can also aid in early detection.
AppSecure Threat Intelligence Insight
CVE-2025-62818 represents a critical vulnerability within widely used Samsung Exynos processors, illustrating the need for proactive vulnerability management. Security teams should learn from this case to improve their monitoring and incident response strategies. The lack of known public exploits does not diminish the urgency of addressing this vulnerability.
Organizations should consider integrating enhanced security practices, including regular patching schedules and comprehensive penetration testing programs. For further insights on strengthening security posture, refer to our resources on penetration testing methodology and vulnerability management program design to better prepare for future vulnerabilities.
By actively addressing vulnerabilities like CVE-2025-62818, organizations can significantly reduce their risk exposure and enhance their overall security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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