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No exploitation reportedFix available

CVE-2023-28489

No exploitation reported by the sources we read.

  • Published2023-04-11
  • Fixed incpci85_v05
  • WeaknessCWE-77

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 CP-8031 MASTER MODULE (All versions < CPCI85 V05), CP-8050 MASTER MODULE (All versions < CPCI85 V05). Affected devices are vulnerable to command injection via the web server port 443/tcp, if the parameter “Remote Operation” is enabled. The parameter is disabled by default. The vulnerability could allow an unauthenticated remote attacker to perform arbitrary code execution on the device.

Timeline

dates in UTC
  1. 2023-04-1110:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 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-2023-28489?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-28489?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Siemens cp-8031 firmwareversion to verify
BranchAffectedFixed in
—< cpci85_v05cpci85_v05
Siemens cp-8050 firmwareversion to verify
BranchAffectedFixed in
—< cpci85_v05cpci85_v05

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-23-103-07 CISA2 known affected

    Siemens CPCI85 Firmware of SICAM A8000 Devices

    CP-8031 MASTER MODULE (6MF2803-1AA00) · CP-8050 MASTER MODULE (6MF2805-0AA00)

Full record on NVD

Fix

  1. Update Siemens cp-8031 firmware to cpci85_v05
  2. Vendor fix CISA ICSA-23-103-07 · 1 productUpdate to CPCI85 V05 or later version
  3. Mitigation from the vendor CISA ICSA-23-103-07 · 2 productsLimit access to the web server on port 80/TCP and 443/TCP with an external firewall.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2025-02-07
  • OpenCVESSVC decisionnone—
  • CNACVSS 3.19.8read 2026-10-23
  • NVDCVSS 3.19.8read 2026-10-23
  • CNAweakness (CWE)CWE-77read 2026-10-23
  • NVDweakness (CWE)CWE-77read 2026-10-23
  • FIRST EPSSEPSS score2.8 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2023-04-11
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2023-28489?

A vulnerability has been identified in CP-8031 MASTER MODULE (All versions < CPCI85 V05), CP-8050 MASTER MODULE (All versions < CPCI85 V05). Affected devices are vulnerable to command injection via the web server port 443/tcp, if the parameter “Remote Operation” is enabled. The parameter is disabled by default. The vulnerability could allow an unauthenticated remote attacker to perform arbitrary code execution on the device.

Is CVE-2023-28489 actively exploited?

Active exploitation of CVE-2023-28489 has not been confirmed. Its EPSS score was 2.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-28489?

CVE-2023-28489 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Running CP-8031 MASTER MODULE (All? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

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