# CVE-2026-83964: Adobe Connect | Improper Certificate Validation (CWE-295)

> An attacker can disclose sensitive memory information in Adobe Connect without user interaction due to improper certificate validation.

- **Severity:** Medium 6.2 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Sep 2026
- **Updated:** 26 Sep 2026
- **Also known as:** GHSA-68hg-jw2h-m6hh

## What is CVE-2026-83964?

CVE-2026-83964 is a medium-severity vulnerability in Adobe Connect, published on 22 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official 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.

Weakness: CWE-295 (Improper Certificate Validation)

## Which versions are affected by CVE-2026-83964?

It affects 2 products.


Products: Adobe Connect, Adobe Connect for Mobile.

## How do I fix CVE-2026-83964?

No fix has been published for CVE-2026-83964 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-83964 being exploited?

There is no known exploitation of CVE-2026-83964 in the wild and no public exploit code.

## Other vulnerabilities in Adobe Connect

- [CVE-2017-11291](https://insights.sbomify.com/CVE-2017-11291/): Server-side request forgery in Adobe Connect 9.6.2 and earlier versions (critical 10.0)
- [CVE-2026-75682](https://insights.sbomify.com/CVE-2026-75682/): Adobe Connect | Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') (CWE-89) (critical 9.9)
- [CVE-2023-4661](https://insights.sbomify.com/CVE-2023-4661/): SQLi in Saphira Connect (critical 9.8)
- [CVE-2023-4662](https://insights.sbomify.com/CVE-2023-4662/): RCE in Saphira Connect (critical 9.8)
- [CVE-2021-40719](https://insights.sbomify.com/CVE-2021-40719/): Adobe Connect Deserialization of Untrusted Data Remote Code Execution (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-83964 and fix it if it is affected.

What it is: CVE-2026-83964 is a medium-severity vulnerability in Adobe Connect, published on 22 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-83964 in the wild and no public exploit code.

Affected product: Adobe Connect. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-83964/ (Markdown: https://insights.sbomify.com/CVE-2026-83964/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-83964
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-83964
- OSV: https://osv.dev/vulnerability/CVE-2026-83964

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-83964/
Summaries are generated and may contain mistakes; the official description above is the record.