Vulnerability Database

327,594

Total vulnerabilities in the database

CVE-2025-47779

Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.26.2, 20.14.1, 21.9.1, and 22.4.1 of Asterisk and versions 18.9-cert14 and 20.7-cert5 of certified-asterisk, SIP requests of the type MESSAGE (RFC 3428) authentication do not get proper alignment. An authenticated attacker can spoof any user identity to send spam messages to the user with their authorization token. Abuse of this security issue allows authenticated attackers to send fake chat messages can be spoofed to appear to come from trusted entities. Even administrators who follow Security best practices and Security Considerations can be impacted. Therefore, abuse can lead to spam and enable social engineering, phishing and similar attacks. Versions 18.26.2, 20.14.1, 21.9.1, and 22.4.1 of Asterisk and versions 18.9-cert14 and 20.7-cert5 of certified-asterisk fix the issue.

  • Published: May 22, 2025
  • Updated: Nov 4, 2025
  • CVE: CVE-2025-47779
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.7
  • AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Software From Fixed in
sangoma / asterisk - 18.26.2
sangoma / asterisk 20.0.0 20.14.1
sangoma / asterisk 21.0.0 21.9.1
sangoma / asterisk 22.0.0 22.4.1
sangoma / certified_asterisk - 18.9
sangoma / certified_asterisk 18.9 18.9.x
sangoma / certified_asterisk 18.9-cert1 18.9-cert1.x
sangoma / certified_asterisk 18.9-cert1-rc1 18.9-cert1-rc1.x
sangoma / certified_asterisk 18.9-cert10 18.9-cert10.x
sangoma / certified_asterisk 18.9-cert11 18.9-cert11.x
sangoma / certified_asterisk 18.9-cert12 18.9-cert12.x
sangoma / certified_asterisk 18.9-cert13 18.9-cert13.x
sangoma / certified_asterisk 18.9-cert2 18.9-cert2.x
sangoma / certified_asterisk 18.9-cert3 18.9-cert3.x
sangoma / certified_asterisk 18.9-cert4 18.9-cert4.x
sangoma / certified_asterisk 18.9-cert5 18.9-cert5.x
sangoma / certified_asterisk 18.9-cert6 18.9-cert6.x
sangoma / certified_asterisk 18.9-cert7 18.9-cert7.x
sangoma / certified_asterisk 18.9-cert8 18.9-cert8.x
sangoma / certified_asterisk 18.9-cert8-rc1 18.9-cert8-rc1.x
sangoma / certified_asterisk 18.9-cert8-rc2 18.9-cert8-rc2.x
sangoma / certified_asterisk 18.9-cert9 18.9-cert9.x
sangoma / certified_asterisk 20.7-cert1 20.7-cert1.x
sangoma / certified_asterisk 20.7-cert1-rc1 20.7-cert1-rc1.x
sangoma / certified_asterisk 20.7-cert1-rc2 20.7-cert1-rc2.x
sangoma / certified_asterisk 20.7-cert2 20.7-cert2.x
sangoma / certified_asterisk 20.7-cert3 20.7-cert3.x
sangoma / certified_asterisk 20.7-cert4 20.7-cert4.x

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.