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 underflow/overflow when the next write occurs. Commit 2c7797182a1618be12017d7d41e0b6581d5d529e fixes the issue.

CVSS v3 4.8 MEDIUM

4.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.3 / Impact : 3.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/capstone-engine/capstone/commit/2c7797182a1618be12017d7d41e0b6581d5d529e	Patch
https://github.com/capstone-engine/capstone/security/advisories/GHSA-85f5-6xr3-q76r	Vendor Advisory
https://github.com/capstone-engine/capstone/security/advisories/GHSA-85f5-6xr3-q76r	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:capstone-engine:capstone::::::::
	cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha1::::::
	cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha2::::::
	cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha3::::::
	cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha4::::::
	cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha5::::::

History

13 Oct 2026, 11:10

Type	Values Removed	Values Added
Summary		(es) Capstone es un framework de desensamblaje. En las versiones 6.0.0-Alpha5 y anteriores, un retorno de vsnprintf sin verificar en SStream_concat permite que un cs_opt_mem.vsnprintf malicioso lleve el índice de SStream a un valor negativo o más allá del final, lo que lleva a un desbordamiento/subdesbordamiento de búfer de pila cuando ocurre la siguiente escritura. El commit 2c7797182a1618be12017d7d41e0b6581d5d529e corrige el problema.

Information

Published : 2025-12-17 22:16

Updated : 2026-10-13 11:10

NVD link : CVE-2025-68114

Mitre link : CVE-2025-68114

CVE.ORG link : CVE-2025-68114

JSON object : View

Products Affected

capstone-engine

capstone

CWE

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CWE-124

Buffer Underwrite ('Buffer Underflow')

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