CVE-2025-43718

Severity: low (CVSS 2.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-01 · updated 2026-10-12
Weakness: CWE-674

Description

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).

Affected products

poppler: from 24.06.1 before 25.04.0 — fixed in 25.04.0

How to fix

Upgrade to a fixed version: poppler 25.04.0. Check the vendor advisory for mitigations.

References

https://github.com/ShadowByte1/CVE-Reports/blob/main/CVE-2025-43718.md
https://gitlab.freedesktop.org/poppler/poppler/-/commit/f54b815672117c250420787c8c006de98e8c7408

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