CVE-2017-12734
No exploitation reported by the sources we read.
- Published2017-08-30
- WeaknessCWE-200 · CWE-895
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 LOGO! 8 BM (incl. SIPLUS variants) (All versions < V1.81.2). An attacker with network access to the integrated web server on port 80/tcp could obtain the session ID of an active user session. A user must be logged in to the web interface. Siemens recommends to use the integrated webserver on port 80/tcp only in trusted networks.
Timeline
dates in UTC- 2017-08-3019:29CVE 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-2017-12734?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-12734?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 |
|---|---|---|---|
| 1.81 | ≤ 1.81.1 | no fix published | 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
Siemens LOGO! (Update A)
Siemens LOGO! 8 BM (incl.'SIPLUS variants): All versions < V1.81.2
Fix
- Vendor fix CISA ICSA-17-243-02 · 1 productSiemens provides LOGO!8 BM FS-05 with firmware version V1.81.2, which fixes CVE-2017-12734
- Mitigation from the vendor CISA ICSA-17-243-02 · 1 productConfigure the environment according to the recommendations in the user manual (see https://support.industry.siemens.com/cs/us/en/view/109741041)
- Mitigation from the vendor CISA ICSA-17-243-02 · 1 productApply cell protection concept (see https://www.siemens.com/cert/operational-guidelines-industrial-security)
- Mitigation from the vendor CISA ICSA-17-243-02 · 1 productUse VPN for protecting network communication between cells
- Mitigation from the vendor CISA ICSA-17-243-02 · 1 productApply Defense-in-Depth (see http://www.industry.siemens.com/topics/global/en/industrial-security/concept/Pages/defense-in-depth.aspx)
Advisories and patches
- cert-portal.siemens.comPatch · Vendor 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 3.17.5read 2026-10-23
- NVDCVSS 2.05read 2026-10-23
- CNAweakness (CWE)CWE-895read 2026-10-23
- NVDweakness (CWE)CWE-200read 2026-10-23
- FIRST EPSSEPSS score1.5 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Published
- 2017-08-30
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2017-12734?
Is CVE-2017-12734 actively exploited?
What is the CVSS score for CVE-2017-12734?
Running Siemens LOGO!? 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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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.