PT-2023-12077 · Qpdf+1 · Qpdf+1

Bin2415 · Published 2021-07-29 · Updated 2025-04-03 · CVE-2021-25786

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions QPDF version 10.0.4

Description An issue was discovered in QPDF, allowing remote attackers to execute arbitrary code via a crafted .pdf file. The Pl ASCII85Decoder::write parameter in libqpdf is vulnerable to this attack.

Recommendations For QPDF version 10.0.4, consider disabling the Pl ASCII85Decoder::write function until a patch is available to prevent exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2025-04290

CVE-2021-25786

DLA-3548-1

OESA-2023-1542

USN-5026-1

USN-5026-2

Affected Products

Qpdf

Red Os

References · 28

• 🔥 https://github.com/qpdf/qpdf/issues/492 · Exploit
• https://osv.dev/vulnerability/CVE-2021-25786 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-25786 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5026-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-25786 · Security Note
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2026-0518SE47 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-25786 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-25786 · Security Note
• https://bdu.fstec.ru/vul/2025-04290 · Security Note
• https://osv.dev/vulnerability/DLA-3548-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5026-2 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5026-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-18020 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-25786 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5026-2 · Vendor Advisory