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CVE-2025-67873

27
FAUCET Score

CVE-2025-67873 describes a heap buffer overflow vulnerability in the Capstone disassembly framework, affecting versions 6.0.0-Alpha5 and prior. This flaw arises from insufficient bounds checking on skipdata length, allowing a malicious skipdata callback to cause cs_disasm/cs_disasm_iter to write beyond allocated memory. Rated 7.8 HIGH (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), successful exploitation requires user interaction and local access, potentially leading to high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.0.0CPE matchmatch criteria
cpe:2.3:a:capstone-engine:capstone:*:*:*:*:*:*:*:*
6.0.0CPE matchmatch criteria
cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha1:*:*:*:*:*:*
6.0.0CPE matchmatch criteria
cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha2:*:*:*:*:*:*
6.0.0CPE matchmatch criteria
cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha3:*:*:*:*:*:*
6.0.0CPE matchmatch criteria
cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.8MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
1.3
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.20%
Probability of exploitation in next 30 days
EPSS Percentile
9.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0020 is in the 8th percentile among its peer group of 11,616 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: azl3 rust 1.90.0-4 on Azure Linux 3.0Fixed in: 1.90.0-4
microsoftpatch availablevia msrc
Product: 20865-17084Fixed in: 1.90.0-4
microsoftpatch availablevia msrc
Product: 20964-17084Fixed in: 1.90.0-4
microsoftpatch availablevia msrc
Product: azl3 rust 1.90.0-3 on Azure Linux 3.0Fixed in: 1.90.0-4
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: capstone
redhatno patchvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: rhcos
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: capstone

Vendor Advisories (2)

redhatCVE-2025-67873Moderate

capstone: Capstone: Heap buffer overflow via skipdata callback allows denial of service or arbitrary code execution.

Dec 17, 2025
microsoft2025-Dec/CVE-2025-67873Moderate

Capstone doesn't check Skipdata length, leading to cs_insn.bytes heap buffer overflow

Dec 9, 2025

References

github.com / capstone-engine/capstone/commit/cbef767ab33b82166d263895f24084b75b316df3
Patch
github.com / capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg
ExploitVendor Advisory