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CVE-2026-34659

Adobe Connect Desktop Application remote code execution

9.6 CRITICALEPSS 1.87%
  1. Published12 May 2026

Description

Adobe Connect versions 2025.9.15, 2025.8.157 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 execute arbitrary code. 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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

Adobe Connect Desktop Application2025.9.15 · ≤ 2025.8.157

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2026-34659 being actively exploited?

CVE-2026-34659 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.87%.

How severe is CVE-2026-34659?

CVE-2026-34659 has a CVSS 3.1 base score of 9.6, rated critical. EPSS estimates a 1.87% probability of exploitation.

Which products are affected by CVE-2026-34659?

Affected products include Adobe Connect Desktop Application.

How do I fix CVE-2026-34659?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-34659 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.