What is CVE-2026-31066?

CVE-2026-31066 is a medium-severity vulnerability in Utt 810g, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 4.5/10. Published 2026-04-06.

How severe is CVE-2026-31066?

Medium severity. CVSS v3 base score is 4.5 out of 10.

Buffer overflow in Utt 810g

CVE-2026-31066

UTT Aggressive HiPER 810G v3v1.7.7-171114 was discovered to contain a buffer overflow in the selDateType parameter of the formTaskEdit function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Vulnerability class: Buffer Overflow

Published 2026-04-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (17.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000

Affected products

Utt 810g — versions 3.0
Utt 810g Firmware

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

github.com/zxq0408/Vul202601/blob/main/6.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-31066?: CVE-2026-31066 is a medium-severity vulnerability in Utt 810g, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 4.5/10. Published 2026-04-06.
How severe is CVE-2026-31066?: Medium severity. CVSS v3 base score is 4.5 out of 10.