# CVE-2026-77541: Ubiquiti UniFi Network Application privilege escalation

Source: https://junglewise.ai/threats/cve-2026-77541-ubiquiti-unifi-network-application-privilege-escalation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-26. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-77541 · Severity: critical · CVSS 9.1 · Published 2026-08-26

UniFi Network Application is used by organizations to centrally manage network infrastructure and security. An improper access control vulnerability allows an authenticated attacker with network access and elevated privileges to escalate their access further within the application, potentially gaining administrative control over the entire managed network.

Technologies: [Ubiquiti UniFi Network Application](https://junglewise.ai/threats/technologies/unifi-network-application). Vendors: [Ubiquiti](https://junglewise.ai/threats/vendors/ubiquiti).

## Quick answers

**Is CVE-2026-77541 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-77541 being exploited in the wild.

**How severe is CVE-2026-77541?** Critical severity, with a CVSS score of 9.1, published 26 August 2026.

**Which products and versions are affected?** Ubiquiti UniFi Network Application <UNKNOWN>.

**Is there a fix for CVE-2026-77541?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-77541 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-77541?** Check whether you run Ubiquiti UniFi Network Application 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.

## Technical details

The vulnerability is an improper access control flaw in UniFi Network Application that allows privilege escalation. The attack requires network access and high privileges within the application, indicating this is not an unauthenticated remote exploit but rather a post-compromise lateral movement or privilege escalation vector. An attacker with these preconditions can escalate privileges to gain higher-level access within the UniFi Network Application. A fix is available in security updates from Ubiquiti; organizations should apply patches immediately to prevent privilege escalation attacks.

## Affected products

- Ubiquiti UniFi Network Application <UNKNOWN>

## Timeline

- 2026-08-26: disclosed
- 2026-08-26: advisory

## References

- [https://community.ui.com/releases/Security-Advisory-Bulletin-067/fc4a3488-7c43-4628-8bab-f715e96dbfc9](https://community.ui.com/releases/Security-Advisory-Bulletin-067/fc4a3488-7c43-4628-8bab-f715e96dbfc9)

## Related threats

- [Ubiquiti UniFi Network Application command injection via improper input validation](https://junglewise.ai/threats/cve-2026-77535-ubiquiti-unifi-network-application-command-injection-via-improper)
- [Ubiquiti UniFi Network Application incorrect authorization](https://junglewise.ai/threats/cve-2026-56842-ubiquiti-unifi-network-application-incorrect-authorization)
- [Ubiquiti UniFi Network Application privilege escalation via improper access control](https://junglewise.ai/threats/cve-2026-55114-ubiquiti-unifi-network-application-privilege-escalation-via)
- [Ubiquiti UniFi Network Application path traversal in self-hosted instances](https://junglewise.ai/threats/cve-2026-54406-ubiquiti-unifi-network-application-path-traversal-in-self-hosted)
- [Ubiquiti UniFi Network Application improper input validation DoS](https://junglewise.ai/threats/cve-2026-54405-ubiquiti-unifi-network-application-improper-input-validation-dos)