What is the CVSS score of CVE-2026-0792?

CVE-2026-0792 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: 0.5%.

How to fix or mitigate CVE-2026-0792?

Within 24 hours: Inventory all ALGO 8180 devices and isolate them from untrusted networks; document their locations and business criticality. Within 7 days: Implement network segmentation to restrict SIP traffic sources; enable logging on all devices; contact ALGO for patch availability and timeline. Within 30 days: Develop a replacement or upgrade strategy; consider deploying a SIP gateway with input validation as an intermediate control; conduct vulnerability reassessment once mitigation is deployed.

8180 Ip Audio Alerter Firmware CVE-2026-0792

CRITICAL

Stack-based Buffer Overflow (CWE-121)

2026-01-23 zdi-disclosures@trendmicro.com

RCE Buffer Overflow Golang Stack Overflow 8180 Ip Audio Alerter Firmware Algosolutions

9.8

CVSS 3.1 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Craft SIP INVITE with oversized Alert-Info header
Exploit

Trigger stack buffer overflow
Execution

Overwrite return address
Impact

Execute arbitrary code on device

Vulnerability Assessment

Weakness	CWE CWE-121 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Stack buffer bounds checking MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list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
Exploitation Conditions	ALGO 8180 IP Audio Alerter device with SIP service enabled and accessible on network. No authentication required; vulnerability exploitable against default SIP configurations receiving unauthenticated INVITE messages.
Impact	CVSS 9.8, EPSS 0.52%. Multiple overflow vectors in the same SIP stack increase exploitation reliability.
Exploit ScenarioDerived	An attacker triggers the overflow via a crafted Alert-Info header in a SIP INVITE, gaining code execution on the alerter.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.

No patch listed yet 0.5% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

ALGO 8180 has a stack-based buffer overflow in SIP INVITE Alert-Info header processing, enabling remote code execution through the VoIP protocol.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:54 CVSS 9.8

SIP Alert-Info header overflow in ALGO 8180 enables device RCE.

RemediationAI

Update firmware. All five ALGO 8180 vulnerabilities should be patched simultaneously.

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

A second CWE-121 stack overflow in the ALGO 8180's SIP processing, this time in the Alert-Info header handler. Part of a series of five vulnerabilities in the same device.

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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

DescriptionCVE.org

ALGO 8180 IP Audio Alerter SIP INVITE Alert-Info Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of ALGO 8180 IP Audio Alerter devices. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of the Alert-Info header of SIP INVITE requests. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-28301.

Executive ViewAI

Why It Matters

A critical remote code execution vulnerability (CVSS 9.8) affects ALGO 8180 IP Audio Alerter devices with no available patch. Attackers can exploit this without authentication by sending malicious SIP requests, potentially compromising all connected devices and gaining control over organizational communications infrastructure. Immediate action is required to identify affected devices and implement protective measures.

Business Impact: Severe

Compensating Controls

Restrict SIP INVITE traffic to trusted IP ranges using firewall rules; implement network segmentation to isolate audio alerting devices from general network access; disable remote SIP connectivity if operationally feasible and use local-only alerting; deploy a SIP-aware WAF or proxy with Alert-Info header validation and length restrictions; monitor for suspicious SIP traffic patterns; implement intrusion detection/prevention signatures for malformed SIP requests targeting this vulnerability.

Threat Intelligence Overview

EPSS Score

0.5%

Top 33% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

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 No

EPSS 0.5%

Patch available No

Active threat No

Deciding rule

CRITICAL severity

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.

SSVC AssessmentENISA

SSVC Decision· derived

Out-of-Cycle

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact

Very High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +49

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Stack-based Buffer Overflow HIGH

A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.