Buffer overflow in Utt 520w
CVE-2026-2066
A weakness has been identified in UTT 进取 520W 1.7.7-180627. This affects the function strcpy of the file /goform/formIpGroupConfig. Executing a manipulation of the argument groupName can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (50.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.000
Affected products
- Utt 520w — versions 3.0
- Utt 520w Firmware — versions 1.7.7-180627
- Utt 进取 520w — versions 1.7.7-180627
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/cymiao1978/cve/blob/main/new/36.md (related, Exploit, Third Party Advisory)
- github.com/cymiao1978/cve/blob/main/new/36.md (Exploit, exploit)
Frequently asked questions
- What is CVE-2026-2066?
- CVE-2026-2066 is a high-severity vulnerability in Utt 520w, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-02-06.
- How severe is CVE-2026-2066?
- High severity. CVSS v3 base score is 8.8 out of 10.