7.8

CVE-2021-3407: artifex mupdf Double Free

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2021-3407DEBIAN-CVE-2021-3407
Published 23-02-2021Last modified 13-02-2025
Open JSON

Vulnerability summary

CVE-2021-3407 is a high (CVSS 7.8) Double Free vulnerability in artifex mupdf. EPSS estimates a 50.23% chance of exploitation in the next 30 days, higher than 98.9% of scored vulnerabilities.

Overall risk
41/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
50.23%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
DLA-2589-1USN-7825-1

Timeline

  1. 23-02-2021
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

A flaw was found in mupdf 1.18.0. Double free of object during linearization may lead to memory corruption and other potential consequences.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

50.23%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

0.00 pp

From 50.23% on 19-09-2026

19-09-202619-10-2026
EPSS score
50.23%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
Artifex1 product
Fedoraproject1 product
Ubuntu1 product
  • mupdf< 1.7a-1ubuntu0.1~esm1 | < 1.12.0+ds1-1ubuntu0.1~esm1 | < 1.16.1+ds1-1ubuntu1+esm1

4 vendors · 5 products

References

12 links
Show all 12 references