CVE-2026-31058
Buffer Overflow in UTT Aggressive HiPER 1200GW Causes DoS
Publication date: 2026-04-06
Last updated on: 2026-04-10
Assigner: MITRE
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| utt | 1200gw_firmware | to 2.5.3-170306 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-120 | The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-31058 is a buffer overflow vulnerability found in the UTT HiPER 1200GW router firmware version v2.5.3-170306. It occurs in the function formConfigDnsFilterGlobal when processing the timeRangeName parameter in an HTTP POST request. Specifically, when the sourceIP parameter is set to ipRange, the code copies the timeRangeName input without proper bounds checking, leading to a buffer overflow.
This unchecked copy operation can be exploited by an attacker sending a crafted POST request with a large payload in the timeRangeName field, potentially causing the device to crash or behave unexpectedly.
How can this vulnerability impact me? :
This vulnerability can be exploited to cause a Denial of Service (DoS) on the affected UTT HiPER 1200GW router. By sending a specially crafted HTTP POST request with a large timeRangeName parameter, an attacker can trigger a buffer overflow that may crash the device or disrupt its normal operation.
Such disruption can lead to network downtime, loss of connectivity, and potential interruption of services relying on the router.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by sending a crafted HTTP POST request to the endpoint `/goform/formConfigDnsFilterGlobal` with the `sourceIP` parameter set to `ipRange` and a large payload in the `timeRangeName` parameter. The request requires Digest authentication.
A detection command example using curl might be:
- curl -X POST -u username:password --digest -d "sourceIP=ipRange&timeRangeName=$(python -c 'print("A"*1000)')" http://<target-ip>/goform/formConfigDnsFilterGlobal
If the system crashes, becomes unresponsive, or returns an error, it indicates the presence of the vulnerability.
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include avoiding sending requests with the `sourceIP` parameter set to `ipRange` combined with large or untrusted input in the `timeRangeName` parameter to the vulnerable endpoint.
Additionally, restrict access to the `/goform/formConfigDnsFilterGlobal` endpoint by limiting network exposure and applying strict authentication controls.
Monitor for unusual crashes or denial of service symptoms on the affected device.
Ultimately, update the firmware to a version that patches this buffer overflow vulnerability once available.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The provided information does not specify any direct impact of the CVE-2026-31058 vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.