What is the CVSS score of CVE-2026-3698?

CVE-2026-3698 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of 810g Firmware are affected by CVE-2026-3698?

A critical buffer overflow vulnerability affects UTT HiPER 810G devices (versions up to 1.7.7-171114) used in network infrastructure, with a public exploit already available.

Is there a public PoC exploit available for CVE-2026-3698?

Yes, a public proof-of-concept exploit is available for CVE-2026-3698. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-3698?

Within 24 hours: Inventory all UTT HiPER 810G devices and isolate affected units from production networks if possible; enable enhanced monitoring for suspicious NTP requests. Within 7 days: Implement network segmentation to restrict access to the /goform/NTP endpoint; deploy WAF rules to block malformed requests to this function. Within 30 days: Contact UTT for patch availability; if unavailable, develop a device replacement or upgrade plan; establish a vendor communication protocol for security updates.

810g Firmware CVE-2026-3698

HIGH

Buffer Overflow (CWE-119)

2026-03-08 cna@vuldb.com

Buffer Overflow 810g Firmware

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Mar 10, 2026 - 15:21 vuln.today

Public exploit code

CVE Published

Mar 08, 2026 - 02:16 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability was identified in UTT HiPER 810G up to 1.7.7-171114. This affects the function strcpy of the file /goform/NTP. The manipulation leads to buffer overflow. The attack may be initiated remotely. The exploit is publicly available and might be used.

AnalysisAI

A buffer overflow in the NTP configuration handler of UTT HiPER 810G firmware versions up to 1.7.7-171114 enables authenticated remote attackers to achieve complete system compromise through memory corruption. Public exploit code exists for this vulnerability, and no patch is currently available. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Authenticate to UTT HiPER 810G web interface

Exploit

Send crafted NTP request to /goform/NTP

Execution

Trigger strcpy buffer overflow

Impact

Execute arbitrary code with device privileges

Access

Authenticate to UTT HiPER 810G web interface

Exploit

Send crafted NTP request to /goform/NTP

Execution

Trigger strcpy buffer overflow

Impact

Execute arbitrary code with device privileges

Vulnerability AssessmentAI

Exploitation	UTT HiPER 810G firmware version up to 1.7.7-171114; valid user credentials required for web interface authentication; /goform/NTP endpoint must be accessible. Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 8.8 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A remote attacker could exploit this flaw, buffer overflow.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all UTT HiPER 810G devices and isolate affected units from production networks if possible; enable enhanced monitoring for suspicious NTP requests. …

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-3698 vulnerability details – vuln.today

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810g Firmware CVE-2026-3698

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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Attack ChainAIDerived

Vulnerability AssessmentAI

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External POC / Exploit Code