External risk intelligence

Adobe Connect SQL Injection Leads to Code Execution

CVE advisorySeverity: CRITICAL (CVSS 9.9)

CVE-2026-121898

Adobe Connect is a web-conferencing and collaboration platform typically deployed as an internet-facing service or web application to allow remote users to join meetings and access shared content, making it commonly reachable from the public internet.

SQL Injection

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

Adobe Connect is impacted by a critical vulnerability that could allow a low-privileged attacker to execute arbitrary code without user interaction. This SQL injection flaw, affecting a collaboration platform, has a broad scope and could lead to significant consequences if exploited. The main concern is confirming relevance and exposure.

Flaw allows code execution via web requests.
Threat could affect user data and system access.
Confirm relevance and assess potential exposure.

Attack Path

How an attacker could exploit the issue

An attacker with low privileges could exploit a SQL injection vulnerability in Adobe Connect. This could allow them to run malicious code on the affected system without needing any interaction from a user. The vulnerability could also impact the system's scope, potentially leading to further compromise.

Requires low-privileged access.
Triggers via SQL injection.
Results in arbitrary code execution.

Live Threat

Current exploitation, exposure, and threat context

A SQL injection vulnerability in Adobe Connect could allow a low-privileged attacker to execute arbitrary code on the system, potentially impacting the current user's context when supported by the advisory.

Arbitrary code execution in user context.
Attacker sends malicious SQL commands.
Compromise of user session data.

Operational Fix

Recommended remediation, mitigation, and detection steps

This SQL injection vulnerability in Adobe Connect necessitates action from teams managing the Adobe Connect application and its underlying infrastructure. The first practical step involves identifying all Adobe Connect deployments, confirming their internet reachability and business criticality, and then locating the accountable owner for each instance to plan risk-based remediation.

Application owners should own the issue.
Verify internet reachability and business criticality.
Plan risk-based remediation and vendor coordination.

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 designed for web conferencing, online meetings, and virtual classroom collaboration. It allows organizations to host interactive presentations, share multimedia content, and manage remote training sessions, typically running as a web-accessible service that connects users across different locations.

What does SQL injection mean for CVE-2026-121898?

This vulnerability is classified as CWE-89, which occurs when an application improperly handles user-supplied data before including it in a database query. In this specific case, an attacker can manipulate these queries to execute unauthorized commands, effectively tricking the system into running malicious code instead of just processing data.

How is this vulnerability triggered?

An attacker triggers this flaw by sending specially crafted web requests to the Adobe Connect server. Because the system improperly neutralizes input, the malicious SQL command is executed. Crucially, this does not require a legitimate user to click a link or perform any action; the attacker interacts directly with the vulnerable service.

Is my Adobe Connect instance at risk?

According to Halo Surface Signal, Adobe Connect is often deployed as an internet-facing application to support remote access, which increases the likelihood that it is reachable by unauthorized parties. If your instance is accessible from the public internet, it faces a higher level of risk compared to systems restricted to internal networks.

How should I respond to this threat?

Begin by creating an inventory of all Adobe Connect instances within your environment. Verify which servers are accessible over the internet and determine their business criticality. Once identified, coordinate with the accountable system owners to prioritize and plan for official vendor-provided patches or guidance.

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.