CVE-2021-25786

qpdf: Heap use after free in Pl_ASCII85Decoder::write

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Severity

Moderate

Red Hat Product Security

5.3

CVSS 3.1

Review impact separately from score.

Published · August 11, 2023

Updated · November 22, 2025

Description

A flaw was found in the qpdf package. This issue may allow attackers to crash the system or execute arbitrary code via a crafted .pdf file to the Pl_ASCII85Decoder::write parameter in libqpdf.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.3
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

CWE-416 · Use After Free