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Hiper 1250Gw CVE-2026-5566

| EUVD-2026-19079 HIGH
Classic Buffer Overflow (CWE-120)
2026-04-05 VulDB GHSA-xgwr-cg3h-pjvj
7.4
CVSS 4.0 · NVD
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NVD PRIMARY
7.4 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

5
Re-analysis Queued
Apr 24, 2026 - 18:22 vuln.today
cvss_changed
PoC Detected
Apr 07, 2026 - 13:20 vuln.today
Public exploit code
EUVD ID Assigned
Apr 05, 2026 - 12:30 euvd
EUVD-2026-19079
Analysis Generated
Apr 05, 2026 - 12:30 vuln.today
CVE Published
Apr 05, 2026 - 12:15 nvd
HIGH 7.4

DescriptionCVE.org

A vulnerability was detected in UTT HiPER 1250GW up to 3.2.7-210907-180535. This affects the function strcpy of the file /goform/formNatStaticMap. Performing a manipulation of the argument NatBind results in buffer overflow. Remote exploitation of the attack is possible. The exploit is now public and may be used.

AnalysisAI

Buffer overflow in UTT HiPER 1250GW router firmware (versions ≤3.2.7-210907-180535) allows authenticated remote attackers to achieve arbitrary code execution with high confidentiality, integrity, and availability impact. The vulnerability resides in the strcpy function within /goform/formNatStaticMap endpoint, where manipulation of the NatBind parameter triggers memory corruption. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate to UTT HiPER device
Delivery
Send crafted request to /goform/formNatStaticMap
Exploit
Inject oversized NatBind parameter
Execution
Trigger strcpy buffer overflow
Impact
Execute arbitrary code on device

Vulnerability AssessmentAI

Exploitation Authenticated attacker with login access to UTT HiPER 1250GW running firmware version 3.2.7-210907-180535 or earlier. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Real-world risk is moderate-to-high despite the 8.8 CVSS score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker conducts reconnaissance against an organization's internet-facing infrastructure and identifies a UTT HiPER 1250GW router with exposed web management interface (commonly TCP 80/443). Using credential stuffing attacks with leaked credentials from third-party breaches or default/weak passwords, the attacker authenticates to the router's administrative console with low-privilege user credentials. …
Remediation No vendor-released patch identified at time of analysis from the provided data sources. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Identify all UTT HiPER 1250GW devices in your network and document current firmware versions via device inventory or management console. …

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CVE-2026-5566 vulnerability details – vuln.today

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