CVE-2020-7593

highpriority · track · 42EPSS 0.087 · 95 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

8.72% (95th) EPSS

CVSS 7.5 · high

Is it mine?

11 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-28

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (V1.81.01 - V1.81.03), LOGO! 8 BM (incl. SIPLUS variants) (V1.82.01), LOGO! 8 BM (incl. SIPLUS variants) (V1.82.02). A buffer overflow vulnerability exists in the Web Server functionality of the device. A remote unauthenticated attacker could send a specially crafted HTTP request to cause a memory corruption, potentially resulting in remote code execution.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedLOGO! 8 BM (incl.'SIPLUS variants)cisa_csaf_ot
Update to V1.81.04
MitigationLOGO! 8 BM (incl.'SIPLUS variants)cisa_csaf_ot
Apply Defense-in-Depth concept, including protection concept outlined in the system manual.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:Csecondary · CISA US

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-120USprimaryCWE-120US

affected products (11)

Products and version ranges known to be affected.

Siemens LOGO! 8 BM (incl.'SIPLUS variants): V1.81.01 - V1.81.03all versionscisa_csaf_otUS
Siemens LOGO! 8 BM (incl.'SIPLUS variants): V1.82.01all versionscisa_csaf_otUS
Siemens LOGO! 8 BM (incl.'SIPLUS variants): V1.82.02all versionscisa_csaf_otUS
Siemens LOGO! 8 BM (incl.'SIPLUS variants)all versionscisa_csaf_otUS
Siemens LOGO! 8 BM (incl.'SIPLUS variants)V1.81.01| → V1.81.03cisa_csaf_otUS
Siemens AG LOGO! 8 BM (incl. SIPLUS variants)≤ V1.82.01enisa_euvdEU
Siemens AG LOGO! 8 BM (incl. SIPLUS variants)≤ V1.81.01 - V1.81.03enisa_euvdEU
Siemens AG LOGO! 8 BM (incl. SIPLUS variants)≤ V1.82.02enisa_euvdEU
siemens logo! 8 bm firmware1.81.01 → 1.81.03nvdUScpe:2.3:o:siemens:logo\!_8_bm_firmware:*:*:*:*:*:*:*:*
siemens logo! 8 bm firmware= 1.82.01nvdUScpe:2.3:o:siemens:logo\!_8_bm_firmware:*:*:*:*:*:*:*:*
siemens logo! 8 bm firmware= 1.82.02nvdUScpe:2.3:o:siemens:logo\!_8_bm_firmware:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-20-196-08Siemens LOGO! Web Server2020-07-14icsa · cisa_csaf_otUS
As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2020-07-14modified 2026-06-17

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+5664 more

references (9)

External citations — patches, advisories, analysis.

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