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Fencer Vulns
low 2.9

CVE-2025-43718 json

Poppler 24.06.1 through 25.x before 25.04.0 allows stack consumption and a SIGSEGV via deeply nested structures within the metadata (such a…

published 2025-10-01 13 mo ago modified 2026-10-12 27 d ago also EUVD-2025-32701

cvss
2.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

Poppler 24.06.1 through 25.x before 25.04.0 allows stack consumption and a SIGSEGV via deeply nested structures within the metadata (such as GTS_PDFEVersion) of a PDF document, e.g., a regular expression for a long pdfsubver string. This occurs in Dict::lookup, Catalog::getMetadata, and associated functions in PDFDoc, with deep recursion in the regex executor (std::__detail::_Executor).

Patch / fix

  • freedesktop Poppler 25.04.0
  • poppler Debian 12 22.12.0-2+deb12u2
  • poppler Debian 13 25.03.0-5+deb13u3
  • poppler Debian 14 25.03.0-10

debian advisories DEBIAN-CVE-2025-43718

  • poppler Ubuntu 22.04 LTS 22.02.0-2ubuntu0.11
  • poppler Ubuntu 24.04 LTS 24.02.0-1ubuntu9.7
  • poppler Ubuntu 26.04 LTS, Ubuntu 25.10 25.03.0-10

ubuntu advisories UBUNTU-CVE-2025-43718

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • poppler hummingbird 1 26.01.0-7.hum1
  • poppler-cpp hummingbird 1 26.01.0-7.hum1
  • poppler-qt5 hummingbird 1 26.01.0-7.hum1
  • poppler-qt6 hummingbird 1 26.01.0-7.hum1
  • poppler-glib hummingbird 1 26.01.0-7.hum1
  • poppler-utils hummingbird 1 26.01.0-7.hum1

red hat advisories RHSA-2026:7364

  • poppler SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES for SAP 15 SP3 +13 more 0.79.0-150200.3.46.1
  • poppler SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS +1 more 23.01.0-150500.3.26.1
  • poppler SLE Module for Package Hub 15 SP7, SLE Module for Package Hub 15 SP6, SLE Module for Basesystem 15 SP7 +2 more 24.03.0-150600.3.24.1
  • poppler-qt5 SLE Module for Package Hub 15 SP7, SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 24.03.0-150600.3.24.1
  • poppler-qt6 SLE Module for Package Hub 15 SP7, SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 24.03.0-150600.3.24.1

suse advisories SUSE-SU-2025:3910-1SUSE-SU-2025:3900-1SUSE-SU-2025:3779-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-43718 updated cvss 4.0

poppler: Poppler stack overflow

  • Red Hat Enterprise Linux 10 poppler
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Hardened Images poppler 26.01.0-7.hum1, poppler-cpp 26.01.0-7.hum1, poppler-qt5 26.01.0-7.hum1, poppler-qt6 26.01.0-7.hum1, poppler-glib 26.01.0-7.hum1, poppler-utils 26.01.0-7.hum1
    fixed: vendor fix RHSA-2026:7364
  • Red Hat Enterprise Linux 6 poppler, poppler-qt, poppler-qt4, poppler-glib, poppler-utils Red Hat Enterprise Linux 7 poppler, poppler-qt, poppler-cpp, poppler-glib, poppler-demos, poppler-utils, +4 more Red Hat Enterprise Linux 8 poppler, poppler-cpp, poppler-qt5, poppler-glib, poppler-utils Red Hat Enterprise Linux 9 poppler, poppler-cpp, poppler-qt5, poppler-glib, poppler-utils
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
13 mo ago

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 2.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

  • freedesktop Poppler

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.