CVE-2021-44165
No exploitation reported by the sources we read.
- Published2021-12-14
- Fixed in2.41
- WeaknessCWE-121
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A vulnerability has been identified in POWER METER SICAM Q100 (All versions < V2.41), POWER METER SICAM Q100 (All versions < V2.41), POWER METER SICAM Q100 (All versions < V2.41), POWER METER SICAM Q100 (All versions < V2.41). The affected firmware contains a buffer overflow vulnerability in the web application that could allow a remote attacker with engineer or admin priviliges to potentially perform remote code execution.
Timeline
dates in UTC- 2021-12-1412:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-44165?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-44165?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.41 | < 2.41 | 2.41 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.41 | < 2.41 | 2.41 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.41 | < 2.41 | 2.41 | NVD |
1 more product in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Siemens POWER METER SICAM Q100
POWER METER SICAM Q100 (7KG9501-0AA01-0AA1) · POWER METER SICAM Q100 (7KG9501-0AA01-2AA1) · POWER METER SICAM Q100 (7KG9501-0AA31-0AA1) · +1 more
Fix
- Update Siemens 7kg9501-0aa01-0aa1 firmware to 2.41
- Vendor fix CISA ICSA-21-350-07 · 4 productsUpdate to V2.41 or later version
- Mitigation from the vendor CISA ICSA-21-350-07 · 4 productsRestrict access to the web server e.g. with a firewall and ensure that the privileged accounts are protected by strong passwords.
Advisories and patches
- cert-portal.siemens.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.17.2read 2026-10-23
- NVDCVSS 2.09read 2026-10-23
- CNAweakness (CWE)CWE-121read 2026-10-23
- FIRST EPSSEPSS score2.7 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Published
- 2021-12-14
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2021-44165?
Is CVE-2021-44165 actively exploited?
What is the CVSS score for CVE-2021-44165?
Running Siemens POWER METER SICAM Q100? Hear about its next vulnerability
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.