External risk intelligence

Adobe Connect SQL Injection Leading to Arbitrary Code Execution

CVE advisorySeverity: CRITICAL (CVSS 9.9)

CVE-2026-121896

Adobe Connect is a web conferencing and virtual classroom platform designed by nature to be accessible over the public internet to facilitate remote meetings, webinars, and training sessions for external and internal users.

SQL Injection

Halo Surface Signal: 5 out of 5 — more likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This advisory addresses a critical vulnerability in Adobe Connect, a web conferencing and virtual classroom platform. The issue, a type of SQL injection, could allow a low-privileged attacker to execute arbitrary code. This means an attacker might be able to run unauthorized commands on the system, potentially impacting the confidentiality, integrity, and availability of connected services. The primary concern is confirming if this technology is in use and if the specific exposure is relevant to our environment.

A code flaw allows unauthorized commands.
Critical vulnerability impacting Adobe Connect.
Confirm relevance and exposure to our environment.

Attack Path

How an attacker could exploit the issue

An attacker with low privileges could exploit this SQL injection vulnerability in Adobe Connect. By sending specially crafted input to the application, an attacker could trick the database into executing arbitrary commands. This could allow them to run malicious code with the same permissions as the current user, potentially leading to a full system compromise.

Network access required.
SQL injection through crafted input.
Arbitrary code execution with user privileges.

Live Threat

Current exploitation, exposure, and threat context

This SQL injection vulnerability in Adobe Connect could allow a low-privileged attacker to execute arbitrary code on a system. The attack does not require user interaction and can change the scope of the vulnerability.

Arbitrary code execution on the affected system.
Exploited via network with low privileges.
Potential for system compromise.

Operational Fix

Recommended remediation, mitigation, and detection steps

This SQL injection vulnerability in Adobe Connect requires action from teams responsible for managing the Adobe Connect application, potentially including application owners, infrastructure, or platform teams, and coordinating with security and vendor management. The immediate first step is to identify all instances of Adobe Connect, determine their exposure and criticality, and locate the accountable owner before planning remediation.

Application owners and platform teams.
Verify Adobe Connect instances and exposure.
Plan targeted remediation based on risk.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is Adobe Connect?

Adobe Connect is a software platform used for web conferencing, virtual classrooms, and hosting remote webinars. It allows organizations to conduct live meetings, online training sessions, and interactive collaborative events by sharing audio, video, and screen content over a network.

What does SQL injection mean for CVE-2026-121896?

This vulnerability, classified as CWE-89, occurs when an application improperly handles special characters in data inputs. Because the software fails to neutralize these characters, a malicious actor can insert their own database commands. In this specific case, that flaw allows the attacker to go beyond simple data theft and execute arbitrary code on the underlying system.

How is this vulnerability triggered?

An attacker triggers this by sending specially crafted input to the application, which the database then processes as a command. Successful exploitation does not require the attacker to trick a legitimate user into clicking a link or performing an action; the system accepts the malicious request automatically. Normal, non-malicious interactions with the software do not trigger this bug.

Why is this CVE relevant to my infrastructure?

Halo Surface Signal notes that Adobe Connect is designed to be accessible over the public internet to support remote attendees. Because it is often exposed to the network to facilitate webinars and meetings, systems running this software are at a higher risk of being reached by unauthorized users compared to internal-only tools.

Do I need to take action if I run Adobe Connect?

Yes. Your first priority is to create an inventory of all Adobe Connect instances within your organization. Once identified, locate the specific team or owner responsible for each instance to coordinate verification and plan for security updates. Do not wait to confirm where your installations are and who manages them.

References

www.adobe.com/trust/security/products/connect/apsb26-191.html

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.