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Fencer Intel
high 7.4

CVE-2017-12735 json

A vulnerability has been identified in LOGO!

published 9y ago modified 4mo ago also EUVD-2017-4274

cvss
7.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). An attacker who performs a Man-in-the-Middle attack between the LOGO! BM and other devices could potentially decrypt and modify network traffic.

Patch / fix

  • siemens logo!_8_bm_firmware 8.3

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-17-243-02 updated cvss 7.4

Siemens LOGO! (Update A)

  • Siemens LOGO! 8 BM (incl.'SIPLUS variants) <V8.3
    affected: fixed in V8.3, mitigation

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

1.14% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N

Affected products

  • Siemens LOGO! 8 BM (incl. SIPLUS variants)

Classification

Weakness
  • CWE-300 Channel Accessible by Non-Endpoint

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.