What is CVE-2023-33508?

CVE-2023-33508 is a critical-severity vulnerability in Kramerav Via Go2, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-05-31.

How severe is CVE-2023-33508?

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

Arbitrary file upload in Kramerav Via Go2

CVE-2023-33508

KramerAV VIA GO² < 4.0.1.1326 is vulnerable to unauthenticated file upload resulting in Remote Code Execution (RCE).

Vulnerability class: Unrestricted File Upload

Published 2023-05-31 · 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: 0.014 (71.7th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

zxsecurity.co.nz/research/advisories/kramer-via-go-2-rce-and-other-vulns/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-33508?: CVE-2023-33508 is a critical-severity vulnerability in Kramerav Via Go2, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-05-31.
How severe is CVE-2023-33508?: Critical severity. CVSS v3 base score is 9.8 out of 10.