CVE-2026-75118: Security vulnerability
CVE-2026-75118 affects the affected technology. The published description indicates a remote or untrusted-network exploitation path.
What happened
A pre-authentication stack-based buffer overflow vulnerability exists in the http_gdpr_decrypt function of TL-MR100 V3. A security weakness in the affected technology is being tracked as CVE-2026-75118. CVE-2026-75118 affects the affected technology.
20 due to insufficient bounds checking of encrypted requests to the /cgi/login endpoint. The reported consequence is code execution, meaning successful exploitation could make the affected application or process run attacker-controlled code. The published description indicates a remote or untrusted-network exploitation path.
The flaw is described as a buffer overflow vulnerability. A buffer overflow occurs when software writes more data into a memory area than it can safely hold. An adjacent unauthenticated attacker with access to the router's web management interface can trigger memory corruption and potentially achieve arbitrary code execution.
The result can range from a crash to attacker-controlled execution when the overwritten memory influences program flow.
Editorial note: this News Brief follows the available evidence and adds length only when additional facts or useful context are available. Where public reporting does not establish a specific victim sequence, CyberDeltaForce does not present one as fact.
What the reporting and advisory establish
A pre-authentication stack-based buffer overflow vulnerability exists in the http_gdpr_decrypt function of TL-MR100 V3.
20 due to insufficient bounds checking of encrypted requests to the /cgi/login endpoint.
An adjacent unauthenticated attacker with access to the router's web management interface can trigger memory corruption and potentially achieve arbitrary code execution.
A security weakness in the affected technology is being tracked as CVE-2026-75118. The flaw is described as a buffer overflow vulnerability. A buffer overflow occurs when software writes more data into a memory area than it can safely hold. The result can range from a crash to attacker-controlled execution when the overwritten memory influences program flow. The available description indicates that the vulnerable path can be reached remotely or from an untrusted network, so the exposure of the affected technology becomes part of the attack condition. The reported consequence is code execution, meaning successful exploitation could make the affected application or process run attacker-controlled code.
What this means for your environment
Move from the published facts to the technical path, exposure conditions and defensive decisions that matter in a real environment.
Attack & Exploitation Path
The sequence below shows how the vulnerability can be reached and what successful exploitation can produce. Each stage is labeled by evidence status.
Required condition: an affected CVE-2026-75118 instance is reachable from a network position available to the attacker.
attacker-controlled network input reaches the vulnerable function on the affected the affected technology service.
the reported buffer overflow is triggered inside the affected technology, crossing the security boundary described by the advisory or vulnerability record.
successful exploitation can execute attacker-controlled code in the affected application or service. The practical reach depends on the privileges and resources available to that process.
Identify remotely reachable CVE-2026-75118; remove unnecessary exposure; apply the vendor fix or mitigation; then review service, network and identity telemetry for exploitation attempts or unexpected follow-on activity.
Why this matters to you
CVE-2026-75118 matters because the practical risk is not the score alone — it is whether the affected technology or service exists in your environment and whether the reported trigger or exposure path can reach it. The current severity is HIGH 8.7. No exploitation flag is currently present in the CDF data, but that does not remove the need to validate affected systems.
Does this deserve attention in my environment?
Check the conditions below against your use of the affected technology or service.
Select the conditions that are true in your environment. Leaving a condition unselected does not mean you are safe — it only means you have not marked it as applicable.
- Search endpoint, software and asset inventory for the affected technology or service.
- Confirm the vendor-recommended fixed version or mitigation and verify deployment, not just assignment, across affected assets.
- Review relevant endpoint, application, network or identity telemetry for activity associated with exploitation of the affected component.
- Track vendor and government guidance for any change in exploitation status while remediation is underway.
What remains unconfirmed
- Available reporting does not currently indicate exploitation, but that can change as vendor, government or threat-intelligence reporting develops.
Sources & References
Original reporting and technical references are kept here for readers who want to verify the facts. Publisher names stay out of the reading flow above.