CVE-2025-67873

Name: CVE-2025-67873
Creator: NVD / NIST
Published: 2025-12-17T22:16:00.147+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2025-67873 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.19%

8.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-122

Affected Software

Vendor	Product	Versions	Update
Capstone-Engine	Capstone	< 6.0.0	—
Capstone-Engine	Capstone	6.0.0	Alpha1

References

https://github.com/capstone-engine/capstone/commit/cbef767ab33b82166d263895f24084b75b316df3Patch
https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jgExploit, Vendor Advisory
https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jgExploit, Vendor Advisory

Timeline

Published: Dec 17, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-67873?

How severe is CVE-2025-67873?

CVE-2025-67873 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2025-67873?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-67873?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST