Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash() that allows attackers controlling the password to overwrite stack memory when opening AESV3/R6 encrypted PDFs. Attackers can supply a password longer than 127 bytes through applications using the libpoppler, libpoppler-glib or C++ API to overflow the K1 and E buffers, crashing the process or corrupting memory.
History

Wed, 14 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 09 Oct 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-120
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 08 Oct 2026 20:00:00 +0000

Type Values Removed Values Added
Description Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash() that allows attackers controlling the password to overwrite stack memory when opening AESV3/R6 encrypted PDFs. Attackers can supply a password longer than 127 bytes through applications using the libpoppler, libpoppler-glib or C++ API to overflow the K1 and E buffers, crashing the process or corrupting memory.
Title Poppler 0.42.0 through 26.10.0 Stack Buffer Overflow via Decrypt::revision6Hash()
First Time appeared Freedesktop
Freedesktop poppler
Weaknesses CWE-121
CPEs cpe:2.3:a:freedesktop:poppler:*:*:*:*:*:*:*:*
Vendors & Products Freedesktop
Freedesktop poppler
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H'}

cvssV4_0

{'score': 8.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-08T19:51:12.884Z

Updated: 2026-10-14T16:05:29.301Z

Reserved: 2026-10-08T16:52:24.550Z

Link: CVE-2026-107705

cve-icon Vulnrichment

Updated: 2026-10-14T14:50:23.970Z

cve-icon NVD

Status : Deferred

Published: 2026-10-08T20:17:35.300

Modified: 2026-10-14T17:18:17.953

Link: CVE-2026-107705

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-08T19:51:12Z

Links: CVE-2026-107705 - Bugzilla