What is CVE-2021-33390?

CVE-2021-33390 is a critical-severity vulnerability in Dpic Project, classified under Use After Free. CVSS score: 9.8/10. Published 2023-08-22.

How severe is CVE-2021-33390?

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

Use After Free in Dpic Project

CVE-2021-33390

dpic 2021.04.10 has a use-after-free in thedeletestringbox() function in dpic.y. A different vulnerablility than CVE-2021-32421.

Vulnerability class: Use-After-Free

Published 2023-08-22 · 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: 0.008 (53.9th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Dpic Project — versions 2021-04-10

Weakness classification (CWE)

CWE-416 — Use After Free

References

gitlab.com/aplevich/dpic/-/issues/10 (Third Party Advisory)

Frequently asked questions

What is CVE-2021-33390?: CVE-2021-33390 is a critical-severity vulnerability in Dpic Project, classified under Use After Free. CVSS score: 9.8/10. Published 2023-08-22.
How severe is CVE-2021-33390?: Critical severity. CVSS v3 base score is 9.8 out of 10.