CVE-2026-107705CWE-121

CVE-2026-107705

Medium · published October 9, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
24.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS v4.0
8.3 · 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
EPSS
0.00328 · 24.6th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-10-09T00:17Z
References (5)
https://gitlab.freedesktop.org/poppler/poppler · [email protected]https://gitlab.freedesktop.org/poppler/poppler/-/blob/poppler-26.10.0/poppler/Decrypt.cc#L1767 · [email protected]https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/2398 · [email protected]https://gitlab.freedesktop.org/poppler/poppler/-/work_items/1814 · [email protected]https://www.vulncheck.com/advisories/poppler-0.42.0-through-26.10.0-stack-buffer-overflow-via-decrypt-revision6hash · [email protected]
EPSS history
Timeline
  • 10 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 08 OCT 19:51Z
    Poppler 0.42.0 through 26.10.0 Stack Buffer Overflow via Decrypt::revision6Hash()
    cvelistv5
  • 08 OCT 19:51Z
    Poppler 0.42.0 through 26.10.0 Stack Buffer Overflow via Decrypt::revision6Hash()
    cvelistv5