What is the CVSS score of CVE-2021-3756?

CVE-2021-3756 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: 1.0%.

Is there a public PoC exploit available for CVE-2021-3756?

Yes, a public proof-of-concept exploit is available for CVE-2021-3756. Prioritise patching immediately. EPSS: 1.0%.

Is there a patch available for CVE-2021-3756?

Yes, a patch is available for CVE-2021-3756. Update the affected software to the latest version immediately.

Libmysofa CVE-2021-3756

CRITICAL

Heap-based Buffer Overflow (CWE-122)

2021-10-29 security@huntr.dev

Buffer Overflow Heap Overflow Libmysofa Fedora

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

CVE Published

Oct 29, 2021 - 16:15 nvd

CRITICAL 9.8

DescriptionNVD

libmysofa is vulnerable to Heap-based Buffer Overflow

AnalysisAI

libmysofa is vulnerable to Heap-based Buffer Overflow. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-122. Affected products include: Symonics Libmysofa, Fedoraproject Fedora.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.