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Fencer Vulns
high 7.8

CVE-2024-31484 json

A vulnerability has been identified in CPC80 Central Processing/Communication (All versions < V16.41), CPCI85 Central Processing/Communicat…

published 2024-05-14 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-29364

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

A vulnerability has been identified in CPC80 Central Processing/Communication (All versions < V16.41), CPCI85 Central Processing/Communication (All versions < V5.30), CPCX26 Central Processing/Communication (All versions < V06.02), ETA4 Ethernet Interface IEC60870-5-104 (All versions < V10.46), ETA5 Ethernet Int. 1x100TX IEC61850 Ed.2 (All versions < V03.27), PCCX26 Ax 1703 PE, Contr, Communication Element (All versions < V06.05). The affected devices contain an improper null termination vulnerability while parsing a specific HTTP header. This could allow an attacker to execute code in the context of the current process or lead to denial of service condition.

Patch / fix

  • Siemens CPC80 Central Processing/Communication V16.41
  • Siemens CPCI85 Central Processing/Communication V5.30
  • Siemens CPCX26 Central Processing/Communication V06.02
  • Siemens ETA4 Ethernet Interface IEC60870-5-104 V10.46
  • Siemens ETA5 Ethernet Int. 1x100TX IEC61850 Ed.2 V03.27
  • Siemens PCCX26 Ax 1703 PE, Contr, Communication Element V06.05
  • siemens cpc80_central_processing\/communication 16.41
  • siemens cpci85_central_processing\/communication 5.30

Vendor advisories

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

cisa ICSA-24-137-02 updated cvss 7.8

Siemens SICAM Products

  • Siemens CPC80 Central Processing/Communication <V16.41
    affected: fixed in V16.41
  • Siemens CPCI85 Central Processing/Communication <V5.30
    affected: fixed in V5.30

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

cisa ICSA-24-165-09 updated cvss 7.8

Siemens SICAM AK3/BC/TM

  • Siemens CPCX26 Central Processing/Communication <V06.02
    affected: fixed in V06.02
  • Siemens ETA4 Ethernet Interface IEC60870-5-104 <V10.46
    affected: fixed in V10.46
  • Siemens ETA5 Ethernet Int. 1x100TX IEC61850 Ed.2 <V03.27
    affected: fixed in V03.27
  • Siemens PCCX26 Ax 1703 PE, Contr, Communication Element <V06.05
    affected: fixed in V06.05

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 4.0 7.3 CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 4.0 7.3 CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Siemens CPC80 Central Processing/Communication
  • Siemens CPCI85 Central Processing/Communication
  • Siemens CPCX26 Central Processing/Communication
  • Siemens ETA4 Ethernet Interface IEC60870-5-104
  • Siemens ETA5 Ethernet Int. 1x100TX IEC61850 Ed.2
  • Siemens PCCX26 Ax 1703 PE, Contr, Communication Element
  • siemens cpc80_central_processing\/communication
  • siemens cpci85_central_processing\/communication

Classification

Weakness
  • CWE-170 Improper Null Termination

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.