CVE-2022-34835Public exploitNetwork attack vector

Code execution via signed I2C length conversion

Published Jun 29, 2022 · Updated May 12, 2026

Stack-based buffer overflow in Siemens RUGGEDCOM ROX before 2.17.1 allows remote attackers to execute arbitrary code through i2c md. The do_i2c_md function converts an unsigned length to a signed value, then passes the resulting oversized length to an I2C read targeting a 16-byte stack buffer. Code execution requires a driver that truncates the length and attacker control of the I2C device response; other affected paths can crash the appliance.

CVSS severity9.8
Critical
EPSS probability2.24%
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 Siemens RUGGEDCOM ROX before 2.17.1 allows remote attackers to execute arbitrary code through i2c md. The do_i2c_md function converts an unsigned length to a signed value, then passes the resulting oversized length to an I2C read targeting a 16-byte stack buffer. Code execution requires a driver that truncates the length and attacker control of the I2C device response; other affected paths can crash the appliance.

The record

CVE
CVE-2022-34835
Published
Jun 29, 2022
Updated
May 12, 2026
Vendor
Siemens
Product
RUGGEDCOM ROX RX1500
Classifications
CWE-787
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 29, 2022CVE publishedPublication date reported by the CVE source.
  2. May 12, 2026Record 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=0 <V2.17.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Siemens · RUGGEDCOM ROX RX1500version=0 <V2.17.1
Siemens · RUGGEDCOM ROX RX5000version=0 <V2.17.1
Siemens · RUGGEDCOM ROX RX1511version=0 <V2.17.1
Siemens · RUGGEDCOM ROX MX5000REversion=0 <V2.17.1
Siemens · RUGGEDCOM ROX RX1536version=0 <V2.17.1
Siemens · RUGGEDCOM ROX RX1512version=0 <V2.17.1
Siemens · RUGGEDCOM ROX RX1510version=0 <V2.17.1
Siemens · RUGGEDCOM ROX RX1524version=0 <V2.17.1
Siemens · RUGGEDCOM ROX RX1501version=0 <V2.17.1
Siemens · RUGGEDCOM ROX RX1400version=0 <V2.17.1
Siemens · RUGGEDCOM ROX MX5000version=0 <V2.17.1

Published CVSS scores

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
9.8Siemens ProductCERTCVSS: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 exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write

Public exploit references

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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