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ConnectApplication · Adobe

CVE-2026-34615

CRITICAL · 9.3 CVSS v3.1 Published 2026-04-14
Fix available
A fix is available. Upgrade to 12.11 / 2025.9.15 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. An attacker could exploit this vulnerability to inject malicious scripts into a web page, potentially gaining elevated access or control over the victim's account or session. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Adobe Connect contains a deserialization vulnerability where untrusted data is insecurely deserialized, allowing an attacker to inject malicious serialized objects that execute arbitrary code in the context of the current user session. The scope change indicates the attack can impact components beyond the vulnerable deserialization point.

MitigationUpgrade Adobe Connect to a version newer than 2025.3 or 12.10 as provided by Adobe's security advisory. Until patched, minimize user exposure by training users to avoid untrusted URLs and consider restricting administrative access.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
ConnectApplication
Affected:< 12.11
Connect Desktop ApplicationApplication
Affected:<= 2025.3< 2025.9.15

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check Adobe Connect Server version
    Access the Adobe Connect login page and look for the version number in the footer, or log into the administration console and navigate to the About or System Info section to find the installed version
    Affected if The installed version is less than 12.11 (for example, 12.10, 12.0.x, or any version starting with 11.x or earlier)
  2. Check Adobe Connect Desktop Application version on Windows
    Open Control Panel > Programs and Features, or open the Desktop Application and go to Help > About Adobe Connect to view the installed version number
    Affected if The installed version is 2025.3 or earlier, OR any version below 2025.9.15 (for example, 2024.x, 2023.x)
  3. Check Adobe Connect Desktop Application version on macOS
    Open the Applications folder, locate Adobe Connect, right-click and choose Get Info, or open the app and check Help > About Adobe Connect
    Affected if The installed version is 2025.3 or earlier, OR any version below 2025.9.15 (for example, 2024.x, 2023.x)
  4. Verify if untrusted URL handling is enabled
    In the Adobe Connect administration console, check Security Settings or URL Validation settings to determine if the system is configured to accept and process URLs from external or untrusted sources
    Affected if URL validation or content filtering is disabled or set to allow untrusted sources, as this is the attack vector for the deserialization flaw

You are affected if Adobe Connect Server is version 12.11 or higher (not vulnerable) OR if Adobe Connect Desktop Application is version 2025.9.15 or higher; otherwise, if running any version below these thresholds, your environment is vulnerable.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 12.11 / 2025.9.15 or later
Fixed in 12.112025.9.15
Interim mitigation

Upgrade Adobe Connect to a version newer than 2025.3 or 12.10 as provided by Adobe's security advisory. Until patched, minimize user exposure by training users to avoid untrusted URLs and consider restricting administrative access.

Recommended fix High confidence

Adobe Connect 12.11 or later; Adobe Connect Desktop Application 2025.9.15 or later

  1. Identify the currently installed Adobe Connect version by checking the About dialog or system information
  2. For Adobe Connect server: Upgrade to version 12.11 or later as specified in the Adobe security bulletin
  3. For Adobe Connect Desktop Application: Upgrade to version 2025.9.15 or later to receive the security patch
  4. After upgrading, verify the new version is installed correctly
  5. Test that Adobe Connect functionality remains operational after the update
Caveat Review Adobe's release notes for any breaking changes between your current version and the target version before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Connect Scoped from the published advisory
  • Consultation8.0 h
  • Implementation24.0 h
  • Testing12.0 h
  • Review / QA8.0 h
52.0 hours of engineering $9,160
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $14,656.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-34615 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data