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Fencer Vulns
high 7.5

CVE-2021-45034 json

A vulnerability has been identified in CP-8000 MASTER MODULE WITH I/O -25/+70°C (All versions < V16.20), CP-8000 MASTER MODULE WITH I/O -40…

published 2022-01-11 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-31831

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

A vulnerability has been identified in CP-8000 MASTER MODULE WITH I/O -25/+70°C (All versions < V16.20), CP-8000 MASTER MODULE WITH I/O -40/+70°C (All versions < V16.20), CP-8021 MASTER MODULE (All versions < V16.20), CP-8022 MASTER MODULE WITH GPRS (All versions < V16.20). The web server of the affected system allows access to logfiles and diagnostic data generated by a privileged user. An unauthenticated attacker could access the files by knowing the corresponding download links.

Patch / fix

  • siemens cp-8000_master_module_with_i/o_-25/+70_firmware 16.20
  • siemens cp-8000_master_module_with_i/o_-40/+70_firmware 16.20
  • siemens cp-8021_master_module_firmware 16.20
  • siemens cp-8022_master_module_with_gprs_firmware 16.20

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-22-013-02 updated cvss 5.3

Siemens SICAM A8000

  • Siemens CP-8000 MASTER MODULE WITH I/O -25/+70°C <V16.20 Siemens CP-8000 MASTER MODULE WITH I/O -40/+70°C <V16.20 Siemens CP-8021 MASTER MODULE <V16.20 Siemens CP-8022 MASTER MODULE WITH GPRS <V16.20
    affected: fixed in V16.20 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

2.38% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • seclists.org http://seclists.org/fulldisclosure/2022/Apr/20 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/166743/Siemens-A8000-CP-8050-CP-8031-SICAM-WEB-Missing-File-Download-Missing-Authentication.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

  • Siemens CP-8000 MASTER MODULE WITH I/O -25/+70°C
  • Siemens CP-8000 MASTER MODULE WITH I/O -40/+70°C
  • Siemens CP-8021 MASTER MODULE
  • Siemens CP-8022 MASTER MODULE WITH GPRS

Classification

Weakness
  • CWE-284 Improper Access Control
  • CWE-532 Insertion of Sensitive Information into Log File

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.