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CVE-2022-43546

29
FAUCET Score

CVE-2022-43546 is a critical vulnerability affecting Siemens POWER METER SICAM Q100 (all versions < V2.50) and SICAM P850/P855 (all versions < V3.10) devices. It stems from improper validation of the EndTime-parameter in web interface requests, allowing an authenticated remote attacker to crash the device or execute arbitrary code. With a CVSS score of 8.8 (High), this vulnerability presents a significant risk due to its network-based attack vector and high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.50CPE matchmatch criteria
cpe:2.3:o:siemens:7kg9501-0aa01-2aa1_firmware:*:*:*:*:*:*:*:*
< 2.50CPE matchmatch criteria
cpe:2.3:o:siemens:7kg9501-0aa31-2aa1_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.9CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.1
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.50%
Probability of exploitation in next 30 days
EPSS Percentile
71.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0150 is in the 69th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cert-portal.siemens.com / productcert/pdf/ssa-570294.pdf
MitigationPatchVendor Advisory
cert-portal.siemens.com / productcert/pdf/ssa-572005.pdf
cert-portal.siemens.com / productcert/pdf/ssa-887249.pdf