CVE-2026-40528
1
CVSS:4.0/AV:P/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| OpenSC | OpenSC | 0 < 0.27.0 | affected |
| OpenSC | OpenSC | 0 < 0358817ec74aeca654f83e7709c7720b14c5db59 | affected |
Weaknesses
- CWE-121: Stack-based Buffer Overflow
- CWE-122: Heap-based Buffer Overflow
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://github.com/OpenSC/OpenSC/commit/0358817ec74aeca654f83e7709c7720b14c5db59
- https://www.vulncheck.com/advisories/opensc-buffer-overrun-in-do-key-value-via-profile-c
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.