# CVE-2026-121887: Adobe Connect XXE vulnerability

Source: https://junglewise.ai/threats/cve-2026-121887-adobe-connect-is-affected-by-an-improper-restriction-of-xml  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-121887 · Severity: critical · CVSS 9.9 · Published 2026-11-10

Adobe Connect, a web conferencing and collaboration platform, contains an XML External Entity (XXE) flaw that allows a low-privileged attacker to execute arbitrary code. An attacker with valid credentials can exploit this to gain full control of the system without requiring additional user interaction. This could lead to complete system compromise and unauthorized access to sensitive meeting data.

Technologies: [Adobe Connect](https://junglewise.ai/threats/technologies/adobe-connect). Vendors: [Adobe](https://junglewise.ai/threats/vendors/adobe).

## Quick answers

**Is CVE-2026-121887 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-121887 being exploited in the wild.

**How severe is CVE-2026-121887?** Critical severity, with a CVSS score of 9.9, published 10 November 2026.

**Which products and versions are affected?** Adobe Connect 12.12 and earlier.

**Is there a fix for CVE-2026-121887?** Yes: fixed in 12.12.a, 12.11.i, 12.10.f, 12.9.a, 12.8.a. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-121887 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-121887?** Check whether you run Adobe Connect at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 12.12.a, 12.11.i, 12.10.f, 12.9.a, 12.8.a

## Technical details

An Improper Restriction of XML External Entity Reference (CWE-611) in Adobe Connect allows authenticated attackers to execute arbitrary code in the context of the application. The vulnerability requires low-privilege credentials but does not require user interaction, and exploits can expand scope to affect other users and systems. A patch is available in Adobe Connect 12.12.a and later versions.

## Affected products

- Adobe Connect 12.12 and earlier

## Timeline

- 2026-11-10: disclosed

## References

- [https://www.adobe.com/trust/security/products/connect/apsb26-191.html](https://www.adobe.com/trust/security/products/connect/apsb26-191.html)

## Related threats

- [Adobe Connect stored cross-site scripting in form fields](https://junglewise.ai/threats/cve-2026-122102-adobe-connect-is-affected-by-a-stored-cross-site-scripting-xss)
- [Adobe Connect incorrect authorization privilege escalation](https://junglewise.ai/threats/cve-2026-121913-adobe-connect-is-affected-by-an-incorrect-authorization)
- [Adobe Connect cross-site scripting in form fields](https://junglewise.ai/threats/cve-2026-121912-adobe-connect-is-affected-by-a-cross-site-scripting-xss)
- [Adobe Connect multiple critical vulnerabilities](https://junglewise.ai/threats/cve-2026-121910-adobe-connect-is-affected-by-a-cross-site-scripting-xss)
- [Adobe Connect SQL injection](https://junglewise.ai/threats/cve-2026-121908-adobe-connect-is-affected-by-an-improper-neutralization-of)