8.8

CVE-2021-25684: canonical apport Improper Input Validation

CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2021-25684
Published 11-06-2021Last modified 03-11-2025
Open JSON

Vulnerability summary

CVE-2021-25684 is a high (CVSS 8.8) Improper Input Validation vulnerability in canonical apport. EPSS estimates a 0.57% chance of exploitation in the next 30 days, higher than 45.8% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
45/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.57%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
USN-4720-1USN-4720-2

Timeline

  1. 11-06-2021
    PublishedVulnerability first disclosed.
  2. 03-11-2025
    Last modifiedVulnerability information updated.

Description

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

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.57%

Chance of exploitation in the next 30 days

Percentile

46%

Versus all other CVEs

30-day change

0.00 pp

From 0.57% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.57%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.launchpad.net)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Canonical1 product
  • apport≥ 2.20.1, < 2.20.1-0ubuntu2.30 | ≥ 2.20.9, < 2.20.9-0ubuntu7.23 | ≥ 2.20.1-0ubuntu1, < 2.20.1-0ubuntu2.30 | ≥ 2.20.9-0ubuntu1, < 2.20.9-0ubuntu7.23 | ≥ 2.20.11-0ubuntu27, < 2.20.11-0ubuntu27.16 | ≥ 2.20.11-0ubuntu50, < 2.20.11-0ubuntu50.5
Ubuntu1 product
  • apport< 2.14.1-0ubuntu3.29+esm6 | < 2.20.1-0ubuntu2.30 | < 2.20.9-0ubuntu7.23 | < 2.20.11-0ubuntu27.16

2 vendors · 2 products

References

6 links