VDB-337085 · CVE-2025-67873 · Nessus 279252

capstone up to 6.0.0-Alpha5 cs_disasm/cs_disasm_iter heap-based overflow

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5.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in capstone up to 6.0.0-Alpha5. It has been rated as critical. Affected by this issue is some unknown functionality of the file cs_disasm/cs_disasm_iter. The manipulation leads to heap-based overflow. This vulnerability is referenced as CVE-2025-67873. The attack can only be performed from a local environment. No exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in capstone up to 6.0.0-Alpha5. It has been rated as critical. This issue affects an unknown function of the file cs_disasm/cs_disasm_iter. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2025-67873 since 12/12/2025. The exploitation is known to be easy. An attack has to be approached locally. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 279252 (Linux Distros Unpatched Vulnerability : CVE-2025-67873), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at Tenable (279252) and CERT Bund (WID-SEC-2026-0769). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

Red Hat Enterprise Linux
Red Hat OpenShift

Productinfo

Name

capstone

Version

6.0.0-Alpha5

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.9

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CNA Base Score: 4.8
CNA Vector (GitHub_M): 🔒

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 279252
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-67873

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Timelineinfo

12/12/2025 CVE reserved
12/17/2025 +5 days Advisory disclosed
12/17/2025 +0 days VulDB entry created
03/18/2026 +91 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2025-67873 (🔒)
GCVE (CVE): GCVE-0-2025-67873
GCVE (VulDB): GCVE-100-337085
CERT Bund: WID-SEC-2026-0769 - Red Hat Enterprise Linux (capstone) und OpenShift (rhcos): Mehrere Schwachstellen

Entryinfo

Created: 12/17/2025 23:03
Updated: 03/18/2026 19:29
Changes: 12/17/2025 23:03 (62), 12/19/2025 18:25 (2), 01/02/2026 21:04 (11), 03/18/2026 19:29 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.