CVE-2026-83964

Adobe Connect | Improper Certificate Validation (CWE-295)

HIGH
7.5
CVSS Score
Published: September 22, 2026 at 06:54 PM UTC
Updated: September 26, 2026 at 11:16 PM UTC
2 products affected across 1 vendorConnectConnect for Mobile· also runs on 2 platforms

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Severity
HIGH7.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

Adobe Connect is affected by an Improper Certificate Validation vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this issue does not require user interaction.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 12.11v < 12.12
Vendor states this is fixed in 12.11.1, 12.12 (unaffected)
Affected range stops below 12.12, so it looks safe — our inference, not a vendor statement
apple-macos (environment) · microsoft-windows (environment)
v ≤ 4.4v < 4.5
Vendor states this is fixed in 4.5 (unaffected)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-295

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