CVE Database · CVE-2026-40528
CVSS v3.1
3.8
CVSS v4.0
1.0
EPSS
0.14%
Published
May 29, 2026
Modified
May 29, 2026
Public PoC / Exploit
All weaponized →No public PoC or exploit code indexed for this CVE.
Links to public security research (Exploit-DB, Nuclei, Trickest, GitHub) for defensive use only.
Description
OpenSC before 0.27.0, fixed in commit 0358817, contains a stack and heap buffer overrun vulnerability in the do_key_value() function in src/pkcs15init/profile.c that allows attackers to corrupt memory by supplying a crafted profile configuration file. During pkcs15-init invocation, a key value entry beginning with '=' followed by more than sizeof(keybuf) characters is copied into keybuf via memcpy without a length check, causing both stack and heap buffer overruns.
CVSS Vector
CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:LWeaknesses (CWE)
References (2)