What is the CVSS score of CVE-2020-37153?

CVE-2020-37153 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: 0.2%.

Is there a public PoC exploit available for CVE-2020-37153?

Yes, a public proof-of-concept exploit is available for CVE-2020-37153. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2020-37153?

Within 24 hours: Identify all systems running ASTPP 4.0.1 and assess their network exposure; disable plugin management and SIP device configuration interfaces if not actively required. Within 7 days: Implement WAF rules to block exploitation attempts targeting vulnerable endpoints; apply input validation and output encoding controls; conduct threat hunting for signs of exploitation. Within 30 days: Evaluate upgrading to patched ASTPP version or alternative VoIP platform; if upgrade unavailable, establish compensating controls including network segmentation, access controls, and enhanced monitoring.

Astpp CVE-2020-37153

CRITICAL

Cross-site Scripting (XSS) (CWE-79)

2026-02-11 disclosure@vulncheck.com

XSS Command Injection AWS Astpp Inextrix

9.8

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-79 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V1 - Encoding and Sanitization Output encoding, context-aware escaping MITRE ATT&CK 2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS 9.8. VoIP billing platform — compromise enables call fraud and CDR manipulation.
Exploit ScenarioDerived	Attacker exploits XSS or command injection to access billing system, modify call rates, or steal CDR data.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.

No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Multiple vulnerabilities in ASTPP 4.0.1 including XSS and command injection in SIP device configuration and plugin management. PoC available.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 22:02 CVSS 9.8

XSS and command injection in ASTPP VoIP billing.

RemediationAI

Update ASTPP.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

CWE-79 and command injection in ASTPP, an open-source VoIP billing platform.

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Exploit and PoC references, threat intelligence from 22 sources

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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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

PoC Detected

Feb 20, 2026 - 20:22 vuln.today

Public exploit code

CVE Published

Feb 11, 2026 - 21:16 nvd

CRITICAL 9.8

DescriptionCVE.org

ASTPP 4.0.1 contains multiple vulnerabilities including cross-site scripting and command injection in SIP device configuration and plugin management interfaces. Attackers can exploit these flaws to inject system commands, hijack administrator sessions, and potentially execute arbitrary code with root permissions through cron task manipulation.

Executive ViewAI

Why It Matters

ASTPP 4.0.1 contains critical vulnerabilities (CVSS 9.8) affecting SIP device configuration and plugin management that could allow attackers to execute arbitrary commands or inject malicious code. Any organization running this telephony platform is at immediate risk of system compromise, data theft, and service disruption. This requires urgent remediation action given the availability of public exploits.

Business Impact: Severe

Compensating Controls

Network segmentation to restrict access to ASTPP configuration interfaces; Web Application Firewall rules blocking suspicious input patterns in SIP device and plugin parameters; Disable or restrict plugin management functionality if operationally feasible; Enforce multi-factor authentication and IP whitelisting for administrative access; Deploy intrusion detection/prevention systems monitoring for command injection signatures; Implement comprehensive logging and real-time alerting on configuration changes; Consider air-gapping affected systems or running them in isolated network zones until patch is available.

Threat Intelligence Overview

EPSS Score

0.2%

Top 64% exploitable

Exploit

POC

Public exploit code exists

Data Quality

5 sources

Confidence: Medium

NVD

CVE.org

EPSS

Exploit-DB

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV No

Public POC Yes

EPSS 0.2%

Patch available No

Active threat No

Deciding rule

CRITICAL severity + public POC available

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.