No exploitation reportedFix available

CVE-2023-31238

Q: Is CVE-2023-31238 actively exploited?

Active exploitation of CVE-2023-31238 has not been confirmed. Its EPSS score was 0.4% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2023-31238?

CVE-2023-31238 has a CVSS v3 base score of 4.8 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

No exploitation reported by the sources we read.

Published2023-06-13
Fixed in2.70
WeaknessCWE-732

Am I 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 SICAM P850 (7KG8500-0AA00-0AA0) (All versions < V3.11), SICAM P850 (7KG8500-0AA00-2AA0) (All versions < V3.11), SICAM P850 (7KG8500-0AA10-0AA0) (All versions < V3.11), SICAM P850 (7KG8500-0AA10-2AA0) (All versions < V3.11), SICAM P850 (7KG8500-0AA30-0AA0) (All versions < V3.11), SICAM P850 (7KG8500-0AA30-2AA0) (All versions < V3.11), SICAM P850 (7KG8501-0AA01-0AA0) (All versions < V3.11), SICAM P850 (7KG8501-0AA01-2AA0) (All versions < V3.11), SICAM P850 (7KG8501-0AA02-0AA0) (All versions < V3.11), SICAM P850 (7KG8501-0AA02-2AA0) (All versions < V3.11), SICAM P850 (7KG8501-0AA11-0AA0) (All versions < V3.11), SICAM P850 (7KG8501-0AA11-2AA0) (All versions < V3.11), SICAM P850 (7KG8501-0AA12-0AA0) (All versions < V3.11), SICAM P850 (7KG8501-0AA12-2AA0) (All versions < V3.11), SICAM P850 (7KG8501-0AA31-0AA0) (All versions < V3.11), SICAM P850 (7KG8501-0AA31-2AA0) (All versions < V3.11), SICAM P850 (7KG8501-0AA32-0AA0) (All versions < V3.11), SICAM P850 (7KG8501-0AA32-2AA0) (All versions < V3.11), SICAM P855 (7KG8550-0AA00-0AA0) (All versions < V3.11), SICAM P855 (7KG8550-0AA00-2AA0) (All versions < V3.11), SICAM P855 (7KG8550-0AA10-0AA0) (All versions < V3.11), SICAM P855 (7KG8550-0AA10-2AA0) (All versions < V3.11), SICAM P855 (7KG8550-0AA30-0AA0) (All versions < V3.11), SICAM P855 (7KG8550-0AA30-2AA0) (All versions < V3.11), SICAM P855 (7KG8551-0AA01-0AA0) (All versions < V3.11), SICAM P855 (7KG8551-0AA01-2AA0) (All versions < V3.11), SICAM P855 (7KG8551-0AA02-0AA0) (All versions < V3.11), SICAM P855 (7KG8551-0AA02-2AA0) (All versions < V3.11), SICAM P855 (7KG8551-0AA11-0AA0) (All versions < V3.11), SICAM P855 (7KG8551-0AA11-2AA0) (All versions < V3.11), SICAM P855 (7KG8551-0AA12-0AA0) (All versions < V3.11), SICAM P855 (7KG8551-0AA12-2AA0) (All versions < V3.11), SICAM P855 (7KG8551-0AA31-0AA0) (All versions < V3.11), SICAM P855 (7KG8551-0AA31-2AA0) (All versions < V3.11), SICAM P855 (7KG8551-0AA32-0AA0) (All versions < V3.11), SICAM P855 (7KG8551-0AA32-2AA0) (All versions < V3.11), SICAM T (All versions < V3.0). Affected devices are missing cookie protection flags when using the default settings. An attacker who gains access to a session token can use it to impersonate a legitimate application user.

Timeline

dates in UTC

2023-06-1309:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-31238?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-31238?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Siemens q200 firmwareversion to verify

Branch	Affected	Fixed in	Source
2.70	< 2.70	2.70	NVD

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

ICSA-25-317-11 CISA36 known affected
Siemens SICAM P850 family and SICAM P855 family
Siemens SICAM P850 (7KG8500-0AA00-0AA0): <3.11 · Siemens SICAM P850 (7KG8501-0AA02-2AA0): <3.11 · Siemens SICAM P850 (7KG8501-0AA11-0AA0): <3.11 · +33 more
ICSA-23-348-13 CISA4 known affected
Siemens SICAM Q100 Devices
POWER METER SICAM Q100 (7KG9501-0AA01-0AA1) · POWER METER SICAM Q100 (7KG9501-0AA01-2AA1) · POWER METER SICAM Q100 (7KG9501-0AA31-0AA1) · +1 more
ICSA-23-166-03 CISA1 known affected
Siemens SICAM Q200 Devices
POWER METER SICAM Q200 family

Full record on NVD

Fix

Update Siemens q200 firmware to 2.70
Vendor fix CISA ICSA-23-348-13 · 4 productsUpdate to V2.60 or later version
Vendor fix CISA ICSA-23-166-03 · 1 productUpdate to V2.70 or later version
Workaround from the vendor CISA ICSA-23-348-13 · 4 productsCVE-2023-31238: Restrict access to port 443/tcp to trusted IP addresses only
Mitigation from the vendor CISA ICSA-25-317-11 · 36 productsSiemens has identified the following specific workarounds and mitigations users can apply to reduce risk:
Mitigation from the vendor CISA ICSA-25-317-11 · 36 productsUpdate to V3.11 or later version
Mitigation from the vendor CISA ICSA-25-317-11 · 36 products(CVE-2023-31238) All affected products: Restrict access to port 443/tcp to trusted IP addresses only

Advisories and patches

cert-portal.siemens.comPatch · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-03-05
OpenCVESSVC decisionnone—
CNACVSS 3.15.5read 2026-10-23
NVDCVSS 3.14.8read 2026-10-23
CNAweakness (CWE)CWE-732read 2026-10-23
NVDweakness (CWE)CWE-732read 2026-10-23
FIRST EPSSEPSS score0.4 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Published: 2023-06-13
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-31238?

Is CVE-2023-31238 actively exploited?

Active exploitation of CVE-2023-31238 has not been confirmed. Its EPSS score was 0.4% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-31238?

CVE-2023-31238 has a CVSS v3 base score of 4.8 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

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