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CVE-2026-0791VulnerabilityPublished

CVE-2026-0791: ALGO 8180 IP Audio Alerter · Stack-based Buffer Overflow

Affects ALGO 8180 IP Audio AlerterSource CVE Database V5

0

Not known to be exploited · CVSS 8.1 High.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.0 base score
8.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.8% chance of exploitation in 30 days – higher than 58% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

Affected software

ProductAffectedFixed in
ALGO8180 IP Audio AlerterAffected
  • =5.5
Fixed in–

AI-suggested

Until an official patch is released by ALGO, European organizations should implement the following specific mitigations: 1) Deploy network-level access controls to restrict SIP traffic to trusted sources only, using firewalls and SIP-aware intrusion prevention systems (IPS) to detect and block malformed INVITE requests containing suspicious Replaces headers. 2) Segment the network to isolate ALGO 8180 devices from general user and internet-facing networks, limiting exposure to untrusted traffic. 3) Monitor network traffic for unusual SIP INVITE patterns or anomalies that could indicate exploitation attempts. 4) Employ rate limiting on SIP requests to reduce the risk of exploitation through rapid repeated attempts. 5) Maintain an inventory of all ALGO 8180 devices and ensure firmware versions are tracked to apply patches promptly once available. 6) Engage with ALGO support channels to obtain early access to security updates or workarounds. 7) Consider temporary disabling or restricting SIP Replaces header processing if device configuration allows. 8) Conduct regular security assessments and penetration testing focused on VoIP and IP audio alerting infrastructure. These targeted actions go beyond generic advice by focusing on the specific protocol and device behavior involved in this vulnerability.

Description

CVE-2026-0791 is a high-severity stack-based buffer overflow vulnerability in the ALGO 8180 IP Audio Alerter device, specifically in the handling of the SIP INVITE Replaces header. This flaw allows remote attackers to execute arbitrary code without authentication by sending a specially crafted SIP INVITE request. The vulnerability arises from improper validation of user-supplied data length before copying it into a fixed-size stack buffer, leading to potential remote code execution. The CVSS score is 8.1, indicating a significant risk to confidentiality, integrity, and availability. No known exploits are currently in the wild, and no patches have been published yet. European organizations using this device in critical communication infrastructure may face risks of device takeover or disruption. Mitigation should focus on network-level protections, strict SIP traffic filtering, and close monitoring until a vendor patch is available. Countries with higher adoption of ALGO devices and strategic reliance on IP audio alerting systems are at greater risk.

References

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