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No exploitation reportedFix available

CVE-2020-7593

No exploitation reported by the sources we read.

  • Published2020-07-14
  • WeaknessCWE-120

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 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.

Timeline

dates in UTC
  1. 2020-07-1414:15CVE publishedNVD

Versions per branch

NVD
Siemens logo\! 8 bm firmwareversion to verify
BranchAffectedFixed in
1.81≥ 1.81.01, ≤ 1.81.03no fix published
1.82= 1.82.01no fix published
1.82= 1.82.02no fix published

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-20-196-08 CISA3 known affected

    Siemens LOGO! Web Server

    Siemens LOGO! 8 BM (incl.'SIPLUS variants): V1.81.01 - V1.81.03 · Siemens LOGO! 8 BM (incl.'SIPLUS variants): V1.82.01 · Siemens LOGO! 8 BM (incl.'SIPLUS variants): V1.82.02

Full record on NVD

Fix

  1. Vendor fix CISA ICSA-20-196-08 · 1 productUpdate to V1.81.04
  2. Vendor fix CISA ICSA-20-196-08 · 1 productUpdate to V1.82.03
  3. Vendor fix CISA ICSA-20-196-08 · 1 productUpdate to V1.82.04
  4. Mitigation from the vendor CISA ICSA-20-196-08 · 3 productsApply Defense-in-Depth concept, including protection concept outlined in the system manual.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.19.8read 2026-10-23
  • NVDCVSS 2.07.5read 2026-10-23
  • CNAweakness (CWE)CWE-120known since 2026-10-23
  • NVDweakness (CWE)CWE-120read 2026-10-23
  • FIRST EPSSEPSS score8.7 %2026-11-04

Identifiers

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
2020-07-14
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2020-7593?

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.

Is CVE-2020-7593 actively exploited?

Active exploitation of CVE-2020-7593 has not been confirmed. Its EPSS score was 8.7% on 2026-11-04, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-7593?

CVE-2020-7593 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.

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