CVE-2026-107705

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://gitlab.freedesktop.org/poppler/poppler
https://gitlab.freedesktop.org/poppler/poppler/-/blob/poppler-26.10.0/poppler/Decrypt.cc#L1767
https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/2398
https://gitlab.freedesktop.org/poppler/poppler/-/work_items/1814
https://www.vulncheck.com/advisories/poppler-0.42.0-through-26.10.0-stack-buffer-overflow-via-decrypt-revision6hash

Configurations

No configuration.

History

08 Oct 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-08 20:17

Updated : 2026-10-14 17:18

NVD link : CVE-2026-107705

Mitre link : CVE-2026-107705

CVE.ORG link : CVE-2026-107705

JSON object : View

Products Affected

No product.

CWE

CWE-121

Stack-based Buffer Overflow

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