CVE-2022-2793

Controller-data tampering via unauthenticated SRTP packets

Published Aug 19, 2022 · Updated Apr 16, 2025

Missing packet authentication in Emerson PAC Machine Edition 9.00 and earlier allows attackers to alter SRTP traffic after connection. The SRTP session accepts subsequent data packets without authenticating or authorizing their sender and without checking packet integrity. A physically proximate attacker must establish a connection and induce user interaction; successful tampering can alter controller data and interrupt operation.

CVSS severity5.9
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing packet authentication in Emerson PAC Machine Edition 9.00 and earlier allows attackers to alter SRTP traffic after connection. The SRTP session accepts subsequent data packets without authenticating or authorizing their sender and without checking packet integrity. A physically proximate attacker must establish a connection and induce user interaction; successful tampering can alter controller data and interrupt operation.

The record

CVE
CVE-2022-2793
Published
Aug 19, 2022
Updated
Apr 16, 2025
Vendor
Emerson Electric Co.
Product
PAC Machine Edition
Classifications
CWE-345, CWE-353, T1692.001
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 19, 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=all <=9.00

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Emerson Electric Co. · PAC Machine Editionversion=all <=9.00

Published CVSS scores

5.9ICS-CERTCVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-345Insufficient Verification of Data Authenticity
CWE-353Missing Support for Integrity Check
T1692.001Unauthorized Message: Command Message

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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