CVE-2026-40528

Name
CVE-2026-40528
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.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
disclosure@vulncheck.com https://github.com/OpenSC/OpenSC/commit/0358817ec74aeca654f83e7709c7720b14c5db59
disclosure@vulncheck.com https://www.vulncheck.com/advisories/opensc-buffer-overrun-in-do-key-value-via-profile-c

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:opensc_project:opensc:*:*:*:*:*:*:*:* opensc >= None < 0.27.0

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
opensc edge-community 0.26.1-r0 Timo Teräs <timo.teras@iki.fi> possibly vulnerable
opensc edge-community 0.26.0-r0 Timo Teräs <timo.teras@iki.fi> possibly vulnerable
opensc edge-community 0.25.1-r0 Timo Teräs <timo.teras@iki.fi> possibly vulnerable
opensc edge-community 0.24.0-r0 Timo Teräs <timo.teras@iki.fi> possibly vulnerable
opensc edge-community 0.21.0-r0 Timo Teräs <timo.teras@iki.fi> possibly vulnerable
opensc edge-community 0.20.0-r0 None possibly vulnerable
opensc edge-community 0.19.0-r0 None possibly vulnerable
opensc 3.23-community 0.26.1-r0 Timo Teräs <timo.teras@iki.fi> possibly vulnerable