Vulnerability · Published Oct 13, 2025 · Assigned by VulDB

CVE-2025-11653UTT HiPER 2620G fNTP strcpy buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in HiPER 2620G from UTT. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.8%top 44.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was determined in UTT HiPER 2620G up to 3.1.4. Impacted is the function strcpy of the file /goform/fNTP. This manipulation of the argument NTPServerIP causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
UTT	HiPER 2620G	3.1.03.1.13.1.23.1.33.1.4

Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-328070 | UTT HiPER 2620G fNTP strcpy buffer overflow vdb-entry, technical-description
VDB-328070 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #665712 | UTT HiPER 2620G <=v3.1.4 Buffer Overflow third-party-advisory
https://github.com/ashin9/CVE/issues/2 exploit, issue-tracking