CVE-2026-8836
Description
A flaw was found in lwIP. A remote attacker can exploit a stack-based buffer overflow vulnerability in the snmp_parse_inbound_frame function within the SNMPv3 User-based Security Model (USM) Handler. By manipulating specific authentication parameters, an attacker could potentially achieve arbitrary code execution, leading to a complete compromise of the affected system.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Integrity,Confidentiality,Availability
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Buffer overflows often can be used to execute arbitrary code, which is usually outside the scope of the product's implicit security policy. This can often be used to subvert any other security service.
Availability
Technical Impact: Modify Memory; DoS: Crash, Exit, or Restart; DoS: Resource Consumption (CPU)
Buffer overflows generally lead to crashes. Other attacks leading to lack of availability are possible, including putting the product into an infinite loop.
Frequently Asked Questions
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