# CVE-2026-95862: Ubiquiti UniFi gateway out-of-bounds write denial of service

Source: https://junglewise.ai/threats/cve-2026-95862-a-malicious-actor-with-access-to-the-network-could-exploit-an-out  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-22. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-95862 · Severity: high · CVSS 7.5 · Published 2026-09-22

UniFi gateways are network access points that control internet connectivity and security for organizations. A flaw in certain gateway devices allows an attacker on the network to crash the gateway by writing data to memory in an uncontrolled manner, causing a denial of service. An organization would lose network connectivity until the device restarts or is manually recovered.

Technologies: [Ubiquiti UniFi Gateway](https://junglewise.ai/threats/technologies/unifi-gateway). Vendors: [Ubiquiti](https://junglewise.ai/threats/vendors/ubiquiti).

## Quick answers

**Is CVE-2026-95862 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-95862 being exploited in the wild.

**How severe is CVE-2026-95862?** High severity, with a CVSS score of 7.5, published 22 September 2026.

**Which products and versions are affected?** Ubiquiti UniFi Gateway.

**Is there a fix for CVE-2026-95862?** 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-2026-95862 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-95862?** Check whether you run Ubiquiti UniFi Gateway. 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

An out-of-bounds write vulnerability in UniFi gateway devices allows an attacker with network access to trigger a denial of service condition by writing beyond allocated memory boundaries. The vulnerability does not provide code execution or data exfiltration, only availability impact. A patch is available from Ubiquiti.

## Affected products

- Ubiquiti UniFi Gateway

## Timeline

- 2026-09-22: disclosed

## References

- [https://community.ui.com/releases/Security-Advisory-Bulletin-069-069/07e367a7-edec-4d85-a058-f97e5ce9ac9c](https://community.ui.com/releases/Security-Advisory-Bulletin-069-069/07e367a7-edec-4d85-a058-f97e5ce9ac9c)

## Related threats

- [Ubiquiti UniFi Gateway uncontrolled recursion denial of service](https://junglewise.ai/threats/cve-2026-95861-a-malicious-actor-with-access-to-the-network-could-exploit-an)
- [Ubiquiti UniFi Gateway out-of-bounds read DoS](https://junglewise.ai/threats/cve-2026-77558-a-malicious-actor-with-access-to-the-network-could-exploit-an-out)
- [Ubiquiti UniFi gateway out-of-bounds read denial of service](https://junglewise.ai/threats/cve-2026-77556-a-malicious-actor-with-access-to-the-network-could-exploit-an-out)
- [Ubiquiti UniFi Gateway out-of-bounds write denial of service](https://junglewise.ai/threats/cve-2026-77555-a-malicious-actor-with-access-to-the-network-could-exploit-an-out)
- [Ubiquiti UniFi Gateway out-of-bounds write denial of service](https://junglewise.ai/threats/cve-2026-77544-a-malicious-actor-with-access-to-the-network-could-exploit-an-out)