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Fencer Intel
critical 9.9

CVE-2022-43546 json

A vulnerability has been identified in POWER METER SICAM Q100 (All versions < V2.50), POWER METER SICAM Q100 (All versions < V2.50), POWER…

published 4y ago modified 4mo ago also EUVD-2022-46543

cvss
9.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

A vulnerability has been identified in POWER METER SICAM Q100 (All versions < V2.50), POWER METER SICAM Q100 (All versions < V2.50), POWER METER SICAM Q100 (All versions < V2.50), POWER METER SICAM Q100 (All versions < V2.50), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P850 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10), SICAM P855 (All versions < V3.10). Affected devices do not properly validate the EndTime-parameter in requests to the web interface on port 443/tcp. This could allow an authenticated remote attacker to crash the device (followed by an automatic reboot) or to execute arbitrary code on the device.

Patch / fix

  • siemens sicam_q100_firmware 2.50
  • siemens sicam_p850_firmware 3.10
  • siemens sicam_p855_firmware 3.10

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Vendor advisories

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

cisa ICSA-22-286-09 updated cvss 9.9

Siemens SICAM P850 and P855 Devices

  • Siemens SICAM P850 (7KG8500-0AA00-0AA0) <V3.10 Siemens SICAM P850 (7KG8500-0AA00-2AA0) <V3.10 Siemens SICAM P850 (7KG8500-0AA10-0AA0) <V3.10 Siemens SICAM P850 (7KG8500-0AA10-2AA0) <V3.10 Siemens SICAM P850 (7KG8500-0AA30-0AA0) <V3.10 Siemens SICAM P850 (7KG8500-0AA30-2AA0) <V3.10
    +12 more products
    Siemens SICAM P850 (7KG8501-0AA01-0AA0) <V3.10 Siemens SICAM P850 (7KG8501-0AA01-2AA0) <V3.10 Siemens SICAM P850 (7KG8501-0AA02-0AA0) <V3.10 Siemens SICAM P850 (7KG8501-0AA02-2AA0) <V3.10 Siemens SICAM P850 (7KG8501-0AA11-0AA0) <V3.10 Siemens SICAM P850 (7KG8501-0AA11-2AA0) <V3.10 Siemens SICAM P850 (7KG8501-0AA12-0AA0) <V3.10 Siemens SICAM P850 (7KG8501-0AA12-2AA0) <V3.10 Siemens SICAM P850 (7KG8501-0AA31-0AA0) <V3.10 Siemens SICAM P850 (7KG8501-0AA31-2AA0) <V3.10 Siemens SICAM P850 (7KG8501-0AA32-0AA0) <V3.10 Siemens SICAM P850 (7KG8501-0AA32-2AA0) <V3.10
    affected: fixed in V3.10, workaround support.industry.siemens.com
  • Siemens SICAM P855 (7KG8550-0AA00-0AA0) <V3.10 Siemens SICAM P855 (7KG8550-0AA00-2AA0) <V3.10 Siemens SICAM P855 (7KG8550-0AA10-0AA0) <V3.10 Siemens SICAM P855 (7KG8550-0AA10-2AA0) <V3.10 Siemens SICAM P855 (7KG8550-0AA30-0AA0) <V3.10 Siemens SICAM P855 (7KG8550-0AA30-2AA0) <V3.10
    +12 more products
    Siemens SICAM P855 (7KG8551-0AA01-0AA0) <V3.10 Siemens SICAM P855 (7KG8551-0AA01-2AA0) <V3.10 Siemens SICAM P855 (7KG8551-0AA02-0AA0) <V3.10 Siemens SICAM P855 (7KG8551-0AA02-2AA0) <V3.10 Siemens SICAM P855 (7KG8551-0AA11-0AA0) <V3.10 Siemens SICAM P855 (7KG8551-0AA11-2AA0) <V3.10 Siemens SICAM P855 (7KG8551-0AA12-0AA0) <V3.10 Siemens SICAM P855 (7KG8551-0AA12-2AA0) <V3.10 Siemens SICAM P855 (7KG8551-0AA31-0AA0) <V3.10 Siemens SICAM P855 (7KG8551-0AA31-2AA0) <V3.10 Siemens SICAM P855 (7KG8551-0AA32-0AA0) <V3.10 Siemens SICAM P855 (7KG8551-0AA32-2AA0) <V3.10
    affected: fixed in V3.10, workaround 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

cisa ICSA-23-166-03 updated cvss 9.9

Siemens SICAM Q200 Devices

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

cisa ICSA-22-314-11 updated cvss 9.9

Siemens SICAM Q100

  • Siemens POWER METER SICAM Q100 (7KG9501-0AA01-0AA1) <V2.50 Siemens POWER METER SICAM Q100 (7KG9501-0AA01-2AA1) <V2.50 Siemens POWER METER SICAM Q100 (7KG9501-0AA31-0AA1) <V2.50 Siemens POWER METER SICAM Q100 (7KG9501-0AA31-2AA1) <V2.50
    affected: fixed in V2.50, workaround

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
2y ago

Exploit prediction

2.08% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
CNA 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Siemens POWER METER SICAM Q100
  • Siemens SICAM P850
  • Siemens SICAM P855
  • siemens sicam_q100_firmware
  • siemens sicam_p850_firmware
  • siemens sicam_p855_firmware

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel 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.