CVE-2025-53418Network attack vector

Remote code execution via unchecked PLC packet length

Published Aug 26, 2025 · Updated Aug 26, 2025

Stack-based buffer overflow in Delta Electronics COMMGR 2.9.0 and earlier allows remote attackers to execute code via PLC packets. The packet handler copies user-supplied data into a fixed-length stack buffer without validating its declared length. Exploitation requires control of a PLC that can send packets to COMMGR and runs code in the application's context, with a crash also possible.

CVSS severity8.6
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Delta Electronics COMMGR 2.9.0 and earlier allows remote attackers to execute code via PLC packets. The packet handler copies user-supplied data into a fixed-length stack buffer without validating its declared length. Exploitation requires control of a PLC that can send packets to COMMGR and runs code in the application's context, with a crash also possible.

The record

CVE
CVE-2025-53418
Published
Aug 26, 2025
Updated
Aug 26, 2025
Vendor
Delta Electronics, Inc.
Product
COMMGR
Classifications
CWE-121, CAPEC-100, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Delta Electronics, Inc. · COMMGRversion=0 <=2.9.0

Published CVSS scores

8.6Delta ElectronicsCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
8.8Zero Day InitiativeCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CAPEC-100Overflow Buffers
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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