What is the CVSS score of CVE-2020-37136?

CVE-2020-37136 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

Which versions of SSH are affected by CVE-2020-37136?

ZOC Terminal 7.25.5 contains a denial of service vulnerability that allows attackers to crash the application by exploiting the private key file input field.

Is there a public PoC exploit available for CVE-2020-37136?

Yes, a public proof-of-concept exploit is available for CVE-2020-37136. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2020-37136?

Within 24 hours: Identify all systems running ZOC Terminal 7.25.5 and assess criticality; restrict access to the application where possible. Within 7 days: Implement compensating controls (disable private key import feature, network segmentation for affected systems, user awareness training on malicious key files). Within 30 days: Contact vendor for patch availability or upgrade timeline; evaluate alternative terminal emulator solutions if patch remains unavailable.

SSH CVE-2020-37136

HIGH

Stack-based Buffer Overflow (CWE-121)

2026-02-05 disclosure@vulncheck.com

SSH Denial Of Service

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Feb 05, 2026 - 20:47 vuln.today

Public exploit code

CVE Published

Feb 05, 2026 - 17:16 nvd

HIGH 7.5

DescriptionCVE.org

ZOC Terminal 7.25.5 contains a denial of service vulnerability in the private key file input field that allows attackers to crash the application. Attackers can overwrite the private key file input with a 2000-byte buffer, causing the application to become unresponsive when attempting to create SSH key files.

AnalysisAI

ZOC Terminal 7.25.5 contains a denial of service vulnerability in the private key file input field that allows attackers to crash the application. [CVSS 7.5 HIGH]

Technical ContextAI

Classified as CWE-121 (Stack-based Buffer Overflow). Affects private key file input field. ZOC Terminal 7.25.5 contains a denial of service vulnerability in the private key file input field that allows attackers to crash the application. Attackers can overwrite the private key file input with a 2000-byte buffer, causing the application to become unresponsive when attempting to create SSH key files.

Affected ProductsAI

Product: private key file input field.

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

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CVE-2020-37136 vulnerability details – vuln.today

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SSH CVE-2020-37136

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

Affected ProductsAI

RemediationAI

More from same product – last 7 days

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External POC / Exploit Code