CVE-2026-43843 in ADAM-3600
Summary
by MITRE • 10/20/2026
An integer overflow vulnerability in the license manager service could allow an unauthenticated attacker to crash the service.
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Analysis
by VulDB Data Team • 10/20/2026
The identified vulnerability resides within the license management subsystem of the affected software, specifically involving a critical arithmetic operation that fails to properly validate input data before performing calculations. This flaw is classified as CWE-190, which denotes an integer overflow or wraparound when converting from one numeric type to another without checking for range errors. In this specific context, the service likely accepts user-supplied values related to license keys, expiration dates, or usage counts and performs mathematical operations such as addition, multiplication, or subtraction on these inputs. Because the implementation does not enforce strict bounds checking or utilize safe arithmetic libraries that detect overflow conditions, an attacker can supply a specially crafted value that exceeds the maximum limit of the integer data type used by the service. This results in the variable wrapping around to a negative number or a significantly smaller positive number than intended, leading to unpredictable behavior within the application logic.
The operational impact of this vulnerability is primarily centered on availability rather than confidentiality or integrity at this stage. Since the primary consequence described is a crash of the license manager service, an unauthenticated attacker can exploit this flaw by sending a malicious request containing the overflow-inducing payload. The resulting exception or memory corruption causes the service process to terminate unexpectedly. This denial of service condition disrupts the ability of legitimate users to validate their licenses, effectively locking them out of the software functionality that depends on this specific component. While the immediate effect is a crash, in more complex architectures where license validation gates access to other critical systems, such an outage could cascade into broader operational disruptions for the organization relying on these services.
From a threat modeling perspective, this vulnerability aligns with MITRE ATT&CK technique T1499, Endpoint Denial of Service, specifically under sub-techniques involving resource exhaustion or service crashes via application layer attacks. The lack of authentication requirement makes it particularly dangerous as it can be exploited remotely without prior access credentials, lowering the barrier to entry for malicious actors seeking to disrupt operations. Furthermore, depending on how the crash is handled by the underlying operating system and runtime environment, there may be secondary risks such as core dump generation which could potentially leak sensitive information about memory layout or internal states, although this would require further analysis of the specific binary implementation.
To mitigate this vulnerability, developers must implement rigorous input validation mechanisms that ensure all numeric inputs fall within expected ranges before any arithmetic operations are performed. Utilizing programming languages or libraries that provide safe integer types which throw exceptions on overflow rather than wrapping silently is a best practice for preventing CWE-190 issues. Additionally, implementing robust error handling and graceful degradation strategies can help maintain service availability even if unexpected values are received. For immediate remediation while patches are being developed, network-level controls such as rate limiting or strict payload size restrictions at the firewall or load balancer level may reduce the likelihood of successful exploitation by filtering out anomalous traffic patterns associated with integer overflow attempts. Regular security code reviews focusing on arithmetic operations and data type conversions are essential to prevent similar flaws in future development cycles.