What is the CVSS score of CVE-2021-42109?

CVE-2021-42109 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: 1.6%.

Is there a public PoC exploit available for CVE-2021-42109?

Yes, a public proof-of-concept exploit is available for CVE-2021-42109. Prioritise patching immediately. EPSS: 1.6%.

Exterity Avediaserver CVE-2021-42109

CRITICAL

Initialization of a Resource with an Insecure Default (CWE-1188)

2021-10-08 cve@mitre.org

Privilege Escalation Exterity Avediaserver Exterity Avediastream Encoders Firmware Avediastream M9605 Firmware Avediastream M9400 Firmware Avediastream M9405 Firmware Avediastream M9305 Firmware Avediastream R9300 Firmware Avediastream R9310 Firmware Avediastream M9325 Firmware Avediastream R9350 Firmware

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 08, 2021 - 18:15 nvd

CRITICAL 9.8

DescriptionNVD

VITEC Exterity IPTV products through 2021-04-30 allow privilege escalation to root.

AnalysisAI

VITEC Exterity IPTV products through 2021-04-30 allow privilege escalation to root. 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 under CWE-1188. VITEC Exterity IPTV products through 2021-04-30 allow privilege escalation to root. Affected products include: Vitec Exterity Avediaserver, Vitec Exterity Avediastream Encoders Firmware, Vitec Avediastream M9605 Firmware, Vitec Avediastream M9400 Firmware, Vitec Avediastream M9405 Firmware. Version information: through 2021.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.