CVE-2022-2825Network attack vector

Unauthenticated SYSTEM code execution via encoding overflow

Published Mar 29, 2023 · Updated Feb 18, 2025

Stack-based buffer overflow in Kepware KEPServerEX 6.11.718.0 allows remote attackers to execute code as SYSTEM without authentication. A text-encoding conversion copies user-supplied data into a stack buffer without first validating its length, allowing the buffer to overflow. Network access to the affected service is sufficient; successful exploitation grants SYSTEM-level code execution and can fully compromise the server host.

CVSS severity9.8
Critical
EPSS probability3.43%
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 Kepware KEPServerEX 6.11.718.0 allows remote attackers to execute code as SYSTEM without authentication. A text-encoding conversion copies user-supplied data into a stack buffer without first validating its length, allowing the buffer to overflow. Network access to the affected service is sufficient; successful exploitation grants SYSTEM-level code execution and can fully compromise the server host.

The record

CVE
CVE-2022-2825
Published
Mar 29, 2023
Updated
Feb 18, 2025
Vendor
Kepware
Product
Kepware Server
Classifications
CWE-121, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 18, 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=6.11.718.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Kepware · Kepware Serverversion=6.11.718.0

Published CVSS scores

9.8Zero Day InitiativeCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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.

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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
T1210Exploitation of Remote Services

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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