What is the CVSS score of CVE-2020-37010?

CVE-2020-37010 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Is there a public PoC exploit available for CVE-2020-37010?

Yes, a public proof-of-concept exploit is available for CVE-2020-37010. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2020-37010?

Within 24 hours: Inventory all systems running BearShare Lite 5.2.5 and isolate them from production networks if possible. Notify affected users and prohibit use on corporate devices. Within 7 days: Enforce application blocklist/removal policies, disable BearShare Lite across managed endpoints via MDM/EDR, and monitor for execution attempts. Within 30 days: Complete decommissioning of BearShare Lite; migrate users to approved file-sharing alternatives with current security patches.

CVE-2020-37010

CRITICAL

Classic Buffer Overflow (CWE-120)

2026-01-29 disclosure@vulncheck.com

Buffer Overflow

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:00 vuln.today

PoC Detected

Jan 29, 2026 - 17:16 vuln.today

Public exploit code

CVE Published

Jan 29, 2026 - 15:16 nvd

CRITICAL 9.8

DescriptionCVE.org

BearShare Lite 5.2.5 contains a buffer overflow vulnerability in the Advanced Search keywords input that allows attackers to execute arbitrary code. Attackers can craft a specially designed payload to overwrite the EIP register and execute shellcode by pasting malicious content into the search keywords field.

AnalysisAI

Buffer overflow in BearShare Lite 5.2.5 Advanced Search keywords input allows code execution. PoC available.

Technical ContextAI

CWE-120 buffer overflow in search keyword processing.

Affected ProductsAI

BearShare Lite 5.2.5

RemediationAI

Discontinue use of BearShare.

CVE-2020-37010 vulnerability details – vuln.today

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CVE-2020-37010

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

Affected ProductsAI

RemediationAI

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External POC / Exploit Code