CVE-2026-76470 in Campus Gateway Software
Summary
by MITRE • 10/07/2026
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco networking engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-76470 are related to incorrect calculation issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-682.
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Analysis
by VulDB Data Team • 10/07/2026
Cisco has released a software hardening update addressing multiple internally discovered vulnerabilities, with specific attention paid to CVE-2026-76470 which falls under the category of incorrect calculation issues classified within the Common Weakness Enumeration pillar as CWE-682. This classification indicates that the vulnerability stems from logic errors in arithmetic operations or data processing routines where the system fails to correctly compute values, leading to unintended behavior. Such flaws are often subtle and can manifest in various ways depending on how the affected software handles input data, state transitions, or resource allocation metrics. The presence of multiple vulnerabilities under this single CVE identifier suggests a systemic issue within a specific module or component rather than an isolated incident, highlighting the importance of comprehensive code review processes to identify patterns of logical errors that might otherwise go unnoticed during standard functional testing.
The technical nature of CWE-682 encompasses scenarios where incorrect calculations lead to security-relevant outcomes such as buffer overflows, integer overflows, off-by-one errors, or logic bypasses. In the context of networking equipment and software, these miscalculations can result in memory corruption when buffers are allocated based on faulty size computations, potentially allowing an attacker to overwrite adjacent memory structures. Alternatively, if the calculation error affects access control checks or authentication token generation, it could lead to privilege escalation or unauthorized access. The operational impact varies significantly depending on the specific implementation details of the affected component but generally includes potential denial of service conditions due to resource exhaustion from infinite loops caused by incorrect loop counters, or data integrity issues where corrupted calculations produce invalid network configurations or routing tables.
From a threat modeling perspective, vulnerabilities rooted in CWE-682 are frequently exploited through crafted inputs designed to trigger specific edge cases in the calculation logic. Attackers may utilize fuzzing techniques to identify these boundaries and exploit them for remote code execution if memory corruption is involved, or for local privilege escalation if the flaw affects system-level permissions. The ATT&CK framework categorizes such exploitation under techniques involving resource manipulation or input validation bypasses, emphasizing that defenders must look beyond simple injection attacks to consider how malformed data can disrupt logical flow within applications. Cisco's proactive approach in identifying these issues internally before external discovery underscores the value of rigorous static and dynamic analysis tools integrated into the development lifecycle to catch arithmetic anomalies early.
Mitigation strategies for vulnerabilities associated with CWE-682 primarily involve applying the provided software hardening release immediately to ensure that the corrected calculation logic is deployed across all affected systems. Organizations should verify their inventory against Cisco’s advisory to determine which specific products and versions are impacted by CVE-2026-76470. Beyond patching, implementing network segmentation can limit the blast radius if an exploit attempt occurs, while monitoring for anomalous behavior such as unexpected resource consumption or system crashes may help detect exploitation attempts in real-time. Developers should also review similar code paths within their own environments to ensure that comparable calculation patterns are validated against edge cases and boundary conditions, thereby reducing the risk of analogous vulnerabilities existing elsewhere in the infrastructure.