What is CVE-2026-1951?

CVE-2026-1951 is a critical-severity vulnerability in Deltaww As320t, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-04-24.

How severe is CVE-2026-1951?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Deltaww As320t

CVE-2026-1951

Delta Electronics AS320T has no checking of the length of the buffer with the directory name vulnerability.

Vulnerability class: Buffer Overflow

Published 2026-04-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (47.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.2% 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: 0.006 · change: 0.000

Affected products

Deltaww As320t — versions 0
Deltaww As320t Firmware

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

759f5e80-c8e1-4224-bead-956d7b33c98b (Vendor Advisory)

Frequently asked questions

What is CVE-2026-1951?: CVE-2026-1951 is a critical-severity vulnerability in Deltaww As320t, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-04-24.
How severe is CVE-2026-1951?: Critical severity. CVSS v3 base score is 9.8 out of 10.