CVE-2022-29884Network attack vector

Permanent denial of service via HTTPS resource leak

Published Jul 12, 2022 · Updated Aug 3, 2024

Resource exhaustion in Siemens SICAM A8000 CPC80 firmware before 16.30 allows remote attackers to permanently interrupt affected devices. Under specific HTTPS-server conditions, the firmware fails to free resources after their effective lifetime, exhausting the device. No authentication is required, and the resulting denial of service is permanent rather than limited to an HTTPS session.

CVSS severity7.5
High
EPSS probability1.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Siemens SICAM A8000 CPC80 firmware before 16.30 allows remote attackers to permanently interrupt affected devices. Under specific HTTPS-server conditions, the firmware fails to free resources after their effective lifetime, exhausting the device. No authentication is required, and the resulting denial of service is permanent rather than limited to an HTTPS session.

The record

CVE
CVE-2022-29884
Published
Jul 12, 2022
Updated
Aug 3, 2024
Vendor
Siemens
Product
CP-8022 Master Module with GPRS
Classifications
CWE-772, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 12, 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

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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 versions < CPC80 V16.30

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Siemens · CP-8022 Master Module with GPRSversion=All versions < CPC80 V16.30
Siemens · CP-8021 Master Moduleversion=All versions < CPC80 V16.30
Siemens · CP-8000 Master Module with I/O -25/+70°Cversion=All versions < CPC80 V16.30
Siemens · CP-8000 Master Module with I/O -40/+70°Cversion=All versions < CPC80 V16.30

Published CVSS scores

7.1NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:C
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-772Missing Release of Resource after Effective Lifetime
T0814Denial of Service

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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