Buffer overflow in Capstone-engine Capstone
CVE-2025-68114
Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, an unchecked vsnprintf return in SStream_concat lets a malicious cs_opt_mem.vsnprintf drive SStream’s index negative or past the end, leading to a stack buffer underf…
Vulnerability class: Buffer Overflow
EPSS: 0.002 (6.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L.
Affected products
- Capstone-engine Capstone — versions 6.0.0, <= 6.0.0-Alpha5
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-68114?
- CVE-2025-68114 is a medium-severity vulnerability in Capstone-engine Capstone, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 4.8/10. Published 2025-12-17.
- How severe is CVE-2025-68114?
- Medium severity. CVSS v3 base score is 4.8 out of 10.