7.5

CVE-2026-25556: artifex software mupdf Double Free

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-25556DEBIAN-CVE-2026-25556
Published 06-02-2026Last modified 14-07-2026
Open JSON

Vulnerability summary

CVE-2026-25556 is a high (CVSS 7.5) Double Free vulnerability in artifex software mupdf. EPSS estimates a 0.77% chance of exploitation in the next 30 days, higher than 54.8% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.77%
0%100%
Low · +0.27 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:10214-1OPENSUSE-SU-2026:21180-1

Timeline

  1. 06-02-2026
    PublishedVulnerability first disclosed.
  2. 14-07-2026
    Last modifiedVulnerability information updated.

Description

MuPDF versions 1.23.0 through 1.27.0 contain a double-free vulnerability in fz_fill_pixmap_from_display_list() when an exception occurs during display list rendering. The function accepts a caller-owned fz_pixmap pointer but incorrectly drops the pixmap in its error handling path before rethrowing the exception. Callers (including the barcode decoding path in fz_decode_barcode_from_display_list) also drop the same pixmap in cleanup, resulting in a double-free that can corrupt the heap and crash the process. This issue affects applications that enable and use MuPDF barcode decoding and can be triggered by processing crafted input that causes a rendering-time error while decoding barcodes.

CVSS metrics

6 scores · 4 sources · 2 versions

EPSS trend

Probability

0.77%

Chance of exploitation in the next 30 days

Percentile

55%

Versus all other CVEs

30-day change

+0.27 pp

From 0.50% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.77%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.ghostscript.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Artifex1 product
  • mupdf≥ 1.23.0, ≤ 1.27.0
Artifex software1 product
  • mupdf≥ 1.23.0, ≤ 1.27.0
Debian1 product
  • mupdfAll versions (No fix recorded) | < 1.27.0+ds1-3
Ubuntu1 product
  • mupdfAll versions (No fix recorded)

4 vendors · 4 products

References

7 links