CVE-2022-3386Network attack vector

Unauthenticated code execution via oversized filename copy

Published Oct 27, 2022 · Updated Apr 16, 2025

Stack-based buffer overflow in Advantech R-SeeNet 2.4.17 and earlier allows remote attackers to execute arbitrary code via HTTP POST requests. The out.php endpoint copies attacker-controlled filename and path elements into a fixed-length stack buffer without validating their length. No authentication or user interaction is required, and successful exploitation runs code in the service account context.

CVSS severity9.8
Critical
EPSS probability1.32%
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 Advantech R-SeeNet 2.4.17 and earlier allows remote attackers to execute arbitrary code via HTTP POST requests. The out.php endpoint copies attacker-controlled filename and path elements into a fixed-length stack buffer without validating their length. No authentication or user interaction is required, and successful exploitation runs code in the service account context.

The record

CVE
CVE-2022-3386
Published
Oct 27, 2022
Updated
Apr 16, 2025
Vendor
Advantech
Product
R-SeeNet
Classifications
CWE-121, CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 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 <=2.4.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Advantech · R-SeeNetversion=0 <=2.4.17

Published CVSS scores

9.8ICS-CERTCVSS: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
CWE-787Out-of-bounds Write
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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