CVE-2025-26682 is a high-severity vulnerability affecting Microsoft ASP.NET Core and Visual Studio 2022. This vulnerability allows allocation of resources without limits or throttling, which can be exploited by unauthorized attackers to deny service over a network. With a CVSS score of 7.5, this vulnerability poses a significant risk to organizations relying on these technologies.
The potential for denial of service (DoS) means that organizations could face interruptions in service availability, affecting user access and operational functionality. Given the reliance on ASP.NET Core for web applications and Visual Studio for development, this vulnerability requires immediate attention from security teams.
Currently, there are no known exploits publicly available for this vulnerability, but the high level of exploitability indicates that it could be targeted in the wild. Organizations should prioritize patching to mitigate the risks associated with this vulnerability.
Urgency is critical for organizations using affected versions of ASP.NET Core and Visual Studio 2022. Immediate action should be taken to apply remediation measures.
Vulnerability Details
The official description of CVE-2025-26682 states that the vulnerability arises from the allocation of resources without limits or throttling in ASP.NET Core. This lack of control allows unauthorized attackers to exploit the system, leading to a denial of service. The vulnerability has a CVSS score of 7.5, indicating high severity, and it is classified under the CWE-770 category.
The affected components include ASP.NET Core and Visual Studio 2022. The vulnerability was published on April 8, 2025. With a high impact on availability, organizations using these products should take the risk seriously.
Technical Analysis
The root cause of the vulnerability is the lack of resource allocation limits in ASP.NET Core, which can lead to service disruption. The attack vector for this vulnerability is classified as NETWORK, and it has low attack complexity, meaning it can be exploited with minimal effort. Importantly, no privileges are required to exploit this vulnerability, and user interaction is not necessary.
The impacts of this vulnerability primarily affect availability. Attackers may leverage this weakness to cause significant disruption to services, which can affect user experience and business operations. Given the potential for widespread impact, organizations should closely monitor their systems for any unusual activity.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2025-26682 is significant. Organizations utilizing ASP.NET Core and Visual Studio 2022 must understand the potential blast radius of this vulnerability. If exploited, attackers could disrupt services for a large number of users, leading to loss of customer trust and potential revenue loss.
Based on the CVSS score of 7.5, organizations should assess their response strategies. The high score indicates that this vulnerability should be addressed in the priority patch cycle to minimize exposure and potential exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of ASP.NET Core include 8.0.0 to 8.0.14 and 9.0.0 to 9.0.3. For Visual Studio 2022, the vulnerable versions range from 17.8.0 to 17.8.19, 17.10.0 to 17.10.12, 17.12.0 to 17.12.6, and 17.13.0 to 17.13.5.
Mitigation & Remediation
Organizations should prioritize patching by upgrading to the latest versions of ASP.NET Core and Visual Studio 2022. If patches are not yet available, consider implementing configuration hardening measures to limit resource allocation. Conduct regular network controls and monitoring to detect unusual patterns indicative of service disruption.
For further assistance in identifying and remediating vulnerabilities, organizations can utilize penetration testing services.
Detection Guidance
Organizations should monitor logs for indicators of service disruption and analyze network signatures for any signs of misuse. Behavioral anomalies in application performance should be closely observed, as they can point to attempts to exploit this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-26682 highlights the importance of implementing proper resource management and throttling mechanisms in web applications. This vulnerability represents a trend of increasing focus on availability attacks, and security teams should incorporate lessons learned from this incident into their defensive strategies.
Organizations should also consider reviewing their vulnerability management program to enhance their response capabilities.
Moreover, integrating continuous security practices will allow for proactive identification of similar vulnerabilities, ensuring the security posture of the organization remains robust.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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