Is CVE-2026-9631 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-9631 being exploited in the wild.

How severe is CVE-2026-9631?

High severity, with a CVSS score of 8.8, published 27 May 2026.

Which products and versions are affected?

UTT HiPER 1250GW up to 3.2.7-210907-180535.

Is there a fix for CVE-2026-9631?

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-2026-9631 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-9631?

Check whether you run UTT HiPER 1250GW 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.

CVE-2026-9631: UTT HiPER 1250GW stack overflow in Web Management Interface

CVE-2026-9631 · Severity: high · CVSS 8.8 · Published 2026-05-27

UTT HiPER 1250GW enterprise routers are affected by a security flaw in their web management interface. An attacker with access to the management console can send a specially crafted request to crash the device or potentially take full control of the router. This could lead to a complete disruption of network services and unauthorized access to internal network traffic.

Technologies: UTT HiPER 1250GW. Vendors: UTT.

Quick answers

Is CVE-2026-9631 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-9631 being exploited in the wild.
How severe is CVE-2026-9631?: High severity, with a CVSS score of 8.8, published 27 May 2026.
Which products and versions are affected?: UTT HiPER 1250GW up to 3.2.7-210907-180535.
Is there a fix for CVE-2026-9631?: 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-2026-9631 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-9631?: Check whether you run UTT HiPER 1250GW 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

A stack-based buffer overflow vulnerability exists in the UTT HiPER 1250GW router's web management interface. The flaw is located in the /goform/formConfigFastDirectionW endpoint, where the application uses the unsafe 'strcpy' function to process the 'Profile' (or 'ssid') argument without proper bounds checking. An authenticated remote attacker can exploit this by sending a POST request with an oversized string, leading to memory corruption. Successful exploitation can result in a Denial of Service (DoS) or arbitrary code execution. A public exploit (PoC) is available, and the vulnerability affects firmware versions up to 3.2.7-210907-180535.

Affected products

UTT HiPER 1250GW up to 3.2.7-210907-180535

Timeline

2026-05-27: advisory: NVD publication date

References

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