CVE-2025-67841 is a high-severity vulnerability affecting Nordic Semiconductor IronSide SE for nRF54H20 prior to version 23.0.2+17. This vulnerability allows an attacker to exploit algorithmic complexity issues, which can lead to significant impacts on system availability. With a CVSS score of 7.5, it is classified as high severity, indicating that organizations should take immediate action to address it.
Risk to organizations includes potential downtime or denial of service due to the underlying algorithmic complexity issue. The exploitation of this vulnerability could lead to severe impacts, especially in environments relying on the affected product. Organizations should prioritize patching immediately to safeguard their systems.
Currently, there are no confirmed public exploits for this vulnerability, and it has not been included in the Known Exploited Vulnerabilities (KEV) catalog. However, given its high severity, organizations should remain vigilant and monitor for any updates or patches from Nordic Semiconductor.
Organizations should address this vulnerability in their priority patch cycle to minimize risks associated with its exploitation. Immediate remediation actions are recommended to prevent potential disruptions.
Vulnerability Details
Nordic Semiconductor IronSide SE for nRF54H20 before 23.0.2+17 has an algorithmic complexity issue. The vulnerability is classified under CWE-407, indicating incorrect handling of the complexity of an algorithm, which can lead to performance degradation or denial of service.
The CVSS score of 7.5 reflects a high severity level, with an attack vector of NETWORK and low attack complexity. The vulnerability requires no privileges or user interaction, making it easier for attackers to exploit.
The vulnerability was published on April 15, 2026, and is currently awaiting analysis. Organizations using the affected product should ensure they are aware of this issue and take necessary precautions.
Technical Analysis
The root cause of CVE-2025-67841 stems from how algorithmic complexity is handled within the IronSide SE framework. When processing requests, the system may experience performance degradation under certain conditions, which could lead to denial of service.
The attack vector for this vulnerability is NETWORK, indicating that an attacker can exploit it remotely without the need for physical access. The attack complexity is classified as LOW, meaning that the steps required to exploit this vulnerability are straightforward.
Importantly, this vulnerability requires NO privileges and does NOT necessitate user interaction, making it a greater risk. The impact on availability is classified as HIGH, which signifies that successful exploitation could significantly disrupt services.
Risk & Impact Analysis
The real-world risk associated with CVE-2025-67841 includes the potential for significant service interruptions, which can affect business operations. Given the critical nature of many applications relying on the IronSide SE, the blast radius for this vulnerability could be extensive.
Organizations should be particularly mindful of their deployment of affected products and implement robust monitoring to detect any anomalies related to this vulnerability. The urgency of addressing this vulnerability is underscored by its high CVSS score and the potential for exploitation.
Given its current status of 'Awaiting Analysis', organizations must proactively seek updates regarding remediation and potential patches from Nordic Semiconductor. The EPSS score of 0.000520000 suggests a low likelihood of exploitation in the wild, though this should not diminish the urgency of addressing the vulnerability.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of Nordic Semiconductor IronSide SE are all versions prior to 23.0.2+17. Organizations should verify their current version and upgrade accordingly to mitigate potential risks.
Mitigation & Remediation
Organizations should prioritize patching to version 23.0.2+17 or later to remediate this vulnerability. If the patch is not immediately available, consider implementing workarounds that limit exposure to the affected product.
Configuration hardening is also recommended to reduce the attack surface. Organizations should monitor their systems for any unusual behaviors that may indicate exploitation attempts.
For more information on best practices for vulnerability management, organizations can reference our vulnerability management program.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts, such as unusual processing patterns or performance degradation. Behavioral anomalies may also signal attempts to exploit this vulnerability.
Network signatures that identify abnormal traffic patterns can help detect potential attacks. Additionally, any unauthorized changes to systems should be investigated promptly.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-67841 highlights the importance of addressing algorithmic complexity issues in software design. As organizations increasingly rely on complex algorithms, they must ensure that their systems are robust against potential exploits.
This vulnerability represents a trend in software vulnerabilities where performance can be exploited, leading to denial of service. Security teams should conduct regular assessments of their systems to identify and remediate such weaknesses.
To enhance their security posture, organizations can benefit from adopting comprehensive security frameworks and practices. For further insights on security assessments, organizations are encouraged to review our guide on application security assessment and consider implementing continuous security testing to ensure their defenses are effective over time.
Additionally, understanding the landscape of vulnerabilities can aid organizations in anticipating future threats. For guidance on navigating these challenges, refer to our resource on penetration testing methodology.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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