What is the CVSS score of CVE-2020-28926?

CVE-2020-28926 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: 14.5%.

Is there a public PoC exploit available for CVE-2020-28926?

Yes, a public proof-of-concept exploit is available for CVE-2020-28926. Prioritise patching immediately. EPSS: 14.5%.

Readymedia CVE-2020-28926

CRITICAL

Classic Buffer Overflow (CWE-120)

2020-11-30 cve@mitre.org

Buffer Overflow RCE Readymedia Debian Linux

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

Nov 30, 2020 - 18:15 nvd

CRITICAL 9.8

DescriptionNVD

ReadyMedia (aka MiniDLNA) before versions 1.3.0 allows remote code execution. Sending a malicious UPnP HTTP request to the miniDLNA service using HTTP chunked encoding can lead to a signedness bug resulting in a buffer overflow in calls to memcpy/memmove.

AnalysisAI

ReadyMedia (aka MiniDLNA) before versions 1.3.0 allows remote code execution. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. ReadyMedia (aka MiniDLNA) before versions 1.3.0 allows remote code execution. Sending a malicious UPnP HTTP request to the miniDLNA service using HTTP chunked encoding can lead to a signedness bug resulting in a buffer overflow in calls to memcpy/memmove. Affected products include: Readymedia Project Readymedia, Debian Debian Linux.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.