External risk intelligence

Adobe Connect Path Traversal Allows Code Execution

CVE advisorySeverity: CRITICAL (CVSS 9.6)

CVE-2026-121349

Adobe Connect is a web conferencing and virtual classroom platform designed for external collaboration. It functions as an internet-facing service by default to allow remote participants, instructors, and attendees to connect from anywhere, making its web interface a public-facing endpoint.

Path Traversal

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

Adobe Connect has a critical vulnerability allowing unauthorized access and potential code execution. This flaw could enable a low-privileged attacker to gain elevated control over a user's account or session without any interaction from the user, impacting the confidentiality and integrity of the system.

  • Unrestricted directory access allows unauthorized control.
  • Critical flaw impacts user accounts and sessions.
  • Confirm relevance and exposure of Adobe Connect.

Attack Path

How an attacker could exploit the issue

An attacker with limited privileges could leverage this flaw to execute arbitrary code on a victim's system. By exploiting a path traversal vulnerability in Adobe Connect, an attacker could manipulate file paths to access sensitive directories or execute commands, potentially leading to elevated access or session control. The attack does not require any interaction from the victim and can be performed remotely.

  • Requires low-privilege access.
  • Triggers by traversing directory paths.
  • Results in code execution or session control.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability in Adobe Connect could allow an attacker to execute arbitrary code on a user's system, potentially leading to unauthorized control of their account or session without requiring any interaction from the user.

  • User account and session control.
  • Exploited via a network path traversal.
  • Attacker gains elevated access.

Operational Fix

Recommended remediation, mitigation, and detection steps

Real-world ownership for this Adobe Connect vulnerability likely falls to the platform or infrastructure teams responsible for managing the Connect service, in coordination with the application owners who understand its business criticality and user impact. The initial practical move should be to inventory all Adobe Connect deployments, confirm their external reachability and business importance, identify the accountable system owners, and then prioritize remediation planning based on exposure and impact.

  • Platform or infrastructure teams own it.
  • Verify external reachability and business impact.
  • Plan coordinated remediation by risk.

Supplementary metadata

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.

Frequently asked questions

What is Adobe Connect?

Adobe Connect is a web conferencing and virtual classroom platform. Organizations use it to host online meetings, webinars, and training sessions, allowing participants to join remotely from various locations via a web browser or specialized application.

What does Path Traversal mean for CVE-2026-121349?

This refers to an Improper Limitation of a Pathname to a Restricted Directory, or CWE-22. It means the software fails to properly sanitize input, allowing an attacker to 'traverse' outside the intended directory. In this case, that weakness allows the attacker to execute unauthorized code.

How does an attacker trigger this vulnerability?

An attacker with low-level privileges sends a specially crafted request to the system to manipulate file paths. This flaw does not require the victim to perform any action, such as clicking a link or opening a file, to trigger the compromise.

Is my Adobe Connect instance at risk?

According to Halo Surface Signal, Adobe Connect is designed to be an internet-facing service to facilitate remote collaboration. Because it is public-facing by default, any instance accessible over the internet is a potential target for this network-based vulnerability.

What steps should I take to address this?

Begin by creating a comprehensive inventory of all Adobe Connect deployments in your environment. Determine which systems are reachable from the internet, identify the teams responsible for managing them, and prioritize these assets for security updates or configuration changes.

References