How severe is CVE-2020-25230?

CVE-2020-25230 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-25230 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25230?

CVE-2020-25230 affects Siemens Logo! 8 Bm Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25230?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-25230 published?

CVE-2020-25230 was published on 2020-12-14 and last updated on 2026-06-17.

CVE-2020-25230

CVE-2020-25230 is a high-severity vulnerability in Siemens Logo! 8 Bm Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-327.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-327
Affected product: Siemens Logo! 8 Bm Firmware
Published: 2020-12-14
Last modified: 2026-06-17

Description

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). Due to the usage of an outdated cipher mode on port 10005/tcp, an attacker could extract the encryption key from a captured communication with the device.

Frequently asked questions

What is CVE-2020-25230?: A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). Due to the usage of an outdated cipher mode on port 10005/tcp, an attacker could extract the encryption key from a captured communication with the device.
How severe is CVE-2020-25230?: CVE-2020-25230 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-25230 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25230?: CVE-2020-25230 affects Siemens Logo! 8 Bm Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25230?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-25230 published?: CVE-2020-25230 was published on 2020-12-14 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-480824.pdf

Affected products (1)

cpe:2.3:o:siemens:logo\!_8_bm_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Siemens Logo! 8 Bm Firmware

CVE-2022-36361 — Critical (CVSS 9.8): A vulnerability has been identified in LOGO! 12/24RCE (6ED1052-1MD08-0BA1) (All versions), LOGO! 12/24RCEo…
CVE-2020-25228 — Critical (CVSS 9.8): A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). A service available on…
CVE-2020-7593 — Critical (CVSS 9.8): A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (V1.81.01 - V1.81.03), LOGO! 8 BM (incl.…
CVE-2020-7589 — Critical (CVSS 9.1): A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions). The vulnerability could lead…
CVE-2020-25234 — High (CVSS 7.7): A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3), LOGO! Soft Comfort…
CVE-2022-36362 — High (CVSS 7.5): A vulnerability has been identified in LOGO! 12/24RCE (6ED1052-1MD08-0BA1) (All versions), LOGO! 12/24RCE…

All CVEs affecting Siemens Logo! 8 Bm Firmware →

Other CWE-327 (Use of a Broken or Risky Cryptographic Algorithm) vulnerabilities

CVE-2026-50086 — Critical (CVSS 10.0): The Aqara IAM/SSO gateway (gw-builder.aqara.com) exposes bidirectional AES round-trups against the platform's signing…
CVE-2026-21718 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in Copeland XWEB Pro version 1.12.1 and prior, enabling any attackers to…
CVE-2025-54426 — Critical (CVSS 9.9): Polkadot Frontier is an Ethereum and EVM compatibility layer for Polkadot and Substrate. In versions prior to commit…
CVE-2024-51478 — Critical (CVSS 9.9): YesWiki is a wiki system written in PHP. Prior to 4.4.5, the use of a weak cryptographic algorithm and a hard-coded…
CVE-2026-28252 — Critical (CVSS 9.8): A Use of a Broken or Risky Cryptographic Algorithm vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge…
CVE-2025-13476 — Critical (CVSS 9.8): Rakuten Viber Cloak mode in Android v25.7.2.0g and Windows v25.6.0.0–v25.8.1.0 uses a static and predictable TLS…

Browse all CWE-327 (Use of a Broken or Risky Cryptographic Algorithm) vulnerabilities →