External risk intelligence

Samsung Escargot Out-of-Bounds Write Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-25207

Escargot is an open-source project by Samsung, often utilized as a component or library within larger software stacks rather than as a standalone, internet-facing service by default. While the vulnerability is network-reachable, its deployment context is typically embedded within applications or internal systems, making public internet exposure dependent on how the library is integrated by developers.

Out-of-bounds Write

Samsung Escargot

2026-03-26

Halo Surface Signal: 3 out of 5 — possibly public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This vulnerability, related to buffer overflows in Samsung's Escargot software, allows for potential data compromise and system disruption. While the technical details involve an out-of-bounds write, the key takeaway for leadership is to understand that a critical flaw has been identified in a component that may be present in various software applications. The primary concern is to confirm whether this specific software is in use within the organization's environment to assess any potential exposure.

Flaw in Samsung's Escargot software component.
Critical issue that may impact security and operations.
Confirm relevance and potential exposure within our systems.

Attack Path

How an attacker could exploit the issue

An attacker can exploit this vulnerability by sending specially crafted network data to a vulnerable instance of Escargot. This can lead to an out-of-bounds write, potentially allowing the attacker to compromise the integrity and availability of the affected system.

Network access is required.
Sending malformed network data triggers the vulnerability.
Leads to code execution and data corruption.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability in Samsung's Escargot could allow an attacker to overwrite memory outside of a buffer's intended bounds, potentially leading to the corruption of critical system data or the disruption of service behavior. This could occur when processing specially crafted input, which might be encountered in various network-facing applications that utilize Escargot.

System data could be corrupted.
Memory corruption could occur.
Service may crash or behave unexpectedly.

Operational Fix

Recommended remediation, mitigation, and detection steps

The Samsung Escargot vulnerability requires coordination between application owners who integrate the library and infrastructure or platform teams responsible for the underlying systems. The first practical step is to inventory where Escargot is deployed, assess its reachability and criticality to business operations, identify the specific application or service owner, and then collaboratively plan remediation based on the risk posture.

Identify application owners.
Verify Escargot deployment and exposure.
Plan coordinated remediation.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is Samsung Escargot?

Samsung Escargot is an open-source software project maintained by Samsung. It functions as a library or component that developers integrate into larger software stacks or applications to handle specific technical tasks, rather than operating as a standalone application that users interact with directly.

How does CVE-2026-25207 create a security weakness?

This vulnerability is classified as an out-of-bounds write, specifically a buffer overflow (CWE-787). In simple terms, the software fails to properly check the size of incoming data, allowing it to write past the allocated memory space. This can overwrite adjacent data, potentially leading to system crashes, corruption, or unauthorized code execution.

What triggers this vulnerability in Escargot?

An attacker triggers this flaw by sending specially crafted network data to a system running the affected Escargot code. It is important to note that merely having the library installed does not trigger the bug; the vulnerability only manifests when the application actively processes malformed input designed to exploit the memory management error.

How do I know if I need to worry about this CVE?

According to Halo Surface Signal, Escargot is typically used as an embedded component rather than a public-facing service. You should prioritize assessing your environment where custom applications or internal systems utilize this library. Your exposure level depends entirely on whether those specific applications are reachable over a network.

What are the first steps to address this issue?

Begin by conducting an inventory to identify which internal applications or services include the Escargot library. Once identified, work with the relevant application owners to evaluate the software's network accessibility and criticality. Use this information to coordinate a plan for updating or patching the affected integration points.

References

github.com/Samsung/escargot/pull/1554

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.