How severe is CVE-2020-25243?

CVE-2020-25243 has a CVSS 3.x base score of 5.1, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2020-25243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25243?

CVE-2020-25243 affects Siemens Logo! Soft Comfort. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25243?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-25243 published?

CVE-2020-25243 was published on 2021-04-22 and last updated on 2026-06-17.

CVE-2020-25243

CVE-2020-25243 is a medium-severity vulnerability in Siemens Logo! Soft Comfort with a CVSS 3.x base score of 5.1. 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 5.1)
CVSS v2: 7.2
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Siemens Logo! Soft Comfort
Published: 2021-04-22
Last modified: 2026-06-17

Description

A vulnerability has been identified in LOGO! Soft Comfort (All versions < V8.4). A zip slip vulnerability could be triggered while importing a compromised project file to the affected software. Chained with other vulnerabilities this vulnerability could ultimately lead to a system takeover by an attacker.

Frequently asked questions

What is CVE-2020-25243?: A vulnerability has been identified in LOGO! Soft Comfort (All versions < V8.4). A zip slip vulnerability could be triggered while importing a compromised project file to the affected software. Chained with other vulnerabilities this vulnerability could ultimately lead to a system takeover by an attacker.
How severe is CVE-2020-25243?: CVE-2020-25243 has a CVSS 3.x base score of 5.1, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2020-25243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25243?: CVE-2020-25243 affects Siemens Logo! Soft Comfort. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25243?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-25243 published?: CVE-2020-25243 was published on 2021-04-22 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-983300.pdf

Affected products (1)

cpe:2.3:a:siemens:logo\!_soft_comfort:*:*:*:*:*:*:*:*

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