What is CVE-2026-31065?

CVE-2026-31065 is a medium-severity vulnerability in Utt 520w, 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-2026-31065?

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

Buffer overflow in Utt 520w

CVE-2026-31065

UTT Aggressive 520W v3v1.7.7-180627 was discovered to contain a buffer overflow in the addCommand parameter of the formConfigCliForEngineerOnly function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Vulnerability class: Buffer Overflow

EPSS: 0.002 (13.9th percentile) — read the EPSS interpretation.

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.

Affected products

Utt 520w — versions 3.0
Utt 520w_firmware — versions 1.7.7-180627
N/a — versions n/a

Weakness classification (CWE)

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

References

cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-31065?: CVE-2026-31065 is a medium-severity vulnerability in Utt 520w, 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-2026-31065?: Medium severity. CVSS v3 base score is 4.5 out of 10.