External risk intelligence

GeoVision GV-LPC Stack Buffer Overflow Vulnerability.

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-57881

This vulnerability affects a remote management service or device portal designed to process remote login data. Such network-facing services in surveillance and access control products are commonly deployed with direct exposure to the public internet to facilitate remote monitoring and administration.

Buffer Overflow

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability has been identified in GeoVision's remote login processing, potentially allowing unauthorized access and code execution. This issue affects specific GeoVision devices.

Unauthenticated remote attackers can cause a denial of service.
It impacts critical remote access and management functions.
Verify relevance and ensure exposure is understood.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending specially crafted login data over the network to the affected devices. This crafted data, which contains overly long input, targets the device's remote login feature, potentially leading to memory corruption, a denial of service, or even the execution of arbitrary code on the device.

Unauthenticated remote access required.
Sending overly long login data triggers the overflow.
Risk of denial of service or code execution.

Live Threat

Current exploitation, exposure, and threat context

A stack-based buffer overflow in the remote login processing of GeoVision's vlsvr could allow an unauthenticated attacker to cause memory corruption, denial of service, or potentially execute arbitrary code. This occurs when crafted login data with overly long input is sent to the affected service.

System login data is at risk.
Attacker sends overly long login data.
Could lead to denial of service.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in the vlsvr component of GeoVision devices requires a coordinated response. Platform or infrastructure teams managing these devices should initiate an asset inventory to locate all instances of the affected technology. Security teams need to assess the business criticality and external reachability of these systems to prioritize remediation efforts. The first practical move is to identify and confirm the responsible owner for each affected device before planning any actions.

Identify and confirm accountable owners.
Verify external reachability and criticality.
Plan remediation based on confirmed risk.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is GeoVision GV-LPC2011 and GV-LPC2211?

These are specialized IP camera products designed for license plate capture and surveillance. They utilize a component called vlsvr to handle network communications and remote administrative tasks, such as processing user login requests.

What does CWE-121 mean for CVE-2026-57881?

CWE-121 refers to a stack-based buffer overflow. This happens when a program writes more data to a memory buffer than it is designed to hold, overwriting adjacent memory space. In this CVE, the flaw allows unauthorized input to corrupt the device's operational memory.

How can an attacker trigger this vulnerability?

An unauthenticated attacker triggers this by sending specially crafted, excessively long login data over the network to the affected service. Simply connecting to the device or sending standard, properly formatted login credentials does not cause the overflow condition.

Why does Halo Surface Signal categorize this as external?

Halo Surface Signal labels this as likely external because these surveillance devices are frequently deployed with direct exposure to the public internet to enable remote monitoring. This accessibility increases the risk that an attacker can reach the vulnerable login service.

Is there a first step I should take to respond to this?

Start by conducting an inventory to locate all GeoVision GV-LPC2011 and GV-LPC2211 devices within your environment. Once identified, confirm who is responsible for each device so your team can coordinate on assessing their specific network exposure and plan subsequent updates.

References

www.geovision.com.tw/cyber_security.php

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.