CVE-2022-22806Network attack vector

Unauthenticated UPS connection via replayed authentication exchange

Published Mar 9, 2022 · Updated Aug 3, 2024

Authentication bypass in Schneider Electric SmartConnect firmware allows remote attackers to connect to a UPS without credentials. The UPS-side SmartConnect authentication flow accepts a replayed, malformed connection exchange instead of rejecting it. Network access to the SmartConnect communication path is required; the published record establishes an unauthenticated connection but does not identify which UPS operations become available.

CVSS severity9.0
Critical
EPSS probability12.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Schneider Electric SmartConnect firmware allows remote attackers to connect to a UPS without credentials. The UPS-side SmartConnect authentication flow accepts a replayed, malformed connection exchange instead of rejecting it. Network access to the SmartConnect communication path is required; the published record establishes an unauthenticated connection but does not identify which UPS operations become available.

The record

CVE
CVE-2022-22806
Published
Mar 9, 2022
Updated
Aug 3, 2024
Vendor
Schneider Electric
Product
EcoStruxure IT SmartConnect
Classifications
CWE-294, CAPEC-94, CAPEC-60, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=SCL Series
  2. Affected versionversion=SMC Series
  3. Affected versionversion=SMTL Series
  4. Affected versionversion=SMT Series
  5. Affected versionversion=SMX Series

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Schneider Electric · EcoStruxure IT SmartConnectversion=SCL Series; version=SMC Series; version=SMTL Series; version=SMT Series; version=SMX Series

Published CVSS scores

9.0Schneider Electric SECVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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-294Authentication Bypass by Capture-replay
CAPEC-94Adversary in the Middle (AiTM)
CAPEC-60Reusing Session IDs (aka Session Replay)
T1557Adversary-in-the-Middle

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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