How severe is CVE-2020-23256?

CVE-2020-23256 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-23256 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-23256?

CVE-2020-23256 affects Electerm Project Electerm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-23256?

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

When was CVE-2020-23256 published?

CVE-2020-23256 was published on 2023-01-20 and last updated on 2026-06-17.

CVE-2020-23256

CVE-2020-23256 is a critical-severity vulnerability in Electerm Project Electerm with a CVSS 3.x base score of 9.8. 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Electerm Project Electerm
Published: 2023-01-20
Last modified: 2026-06-17

Description

An issue was discovered in Electerm 1.3.22, allows attackers to execute arbitrary code via unverified request to electerms service.

Frequently asked questions

What is CVE-2020-23256?: An issue was discovered in Electerm 1.3.22, allows attackers to execute arbitrary code via unverified request to electerms service.
How severe is CVE-2020-23256?: CVE-2020-23256 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-23256 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-23256?: CVE-2020-23256 affects Electerm Project Electerm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-23256?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-23256 published?: CVE-2020-23256 was published on 2023-01-20 and last updated on 2026-06-17.

References

https://github.com/electerm/electerm/issues/1686

Affected products (1)

cpe:2.3:a:electerm_project:electerm:1.3.22:*:*:*:*:*:*:*

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