What is CVE-2021-25684?

CVE-2021-25684 is a high-severity vulnerability in Canonical Apport, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2021-06-11.

How severe is CVE-2021-25684?

High severity. CVSS v3 base score is 8.8 out of 10.

Improper input validation in Canonical Apport

CVE-2021-25684

It was discovered that apport in data/apport did not properly open a report file to prevent hanging reads on a FIFO.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2021-06-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (46.0th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.0% 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

Canonical Apport — versions 2.20.1, 2.20.9, 2.20.11-0ubuntu27

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

bugs.launchpad.net/ubuntu/+source/apport/+bug/1912326 (Exploit, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2021-25684?: CVE-2021-25684 is a high-severity vulnerability in Canonical Apport, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2021-06-11.
How severe is CVE-2021-25684?: High severity. CVSS v3 base score is 8.8 out of 10.