CVE catalog

CVE-2026-49282

Capstone is a disassembly framework. Prior to version 6.0.0-Alpha9, Capstone's public `cs_insn_name()` API forwards caller-supplied instruction IDs directly to the selected architecture backend. Most

[CVE catalog]

Severity: Medium · CVSS 6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Aug 14, 2026, 5:44:44 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.18% · Oct 25, 2026

Capstone is a disassembly framework. Prior to version 6.0.0-Alpha9, Capstone's public `cs_insn_name()` API forwards caller-supplied instruction IDs directly to the selected architecture backend. Most backends validate the ID before indexing instruction-name tables, but the M68K and RISCV backends have missing or incomplete bounds checks. On a Capstone handle opened for M68K or RISCV, a caller-controlled invalid instruction ID can trigger an out-of-bounds read and crash the process. The demonstrated impact is availability loss in applications or bindings that expose instruction-name lookup to untrusted IDs. No code execution or data disclosure was demonstrated. Version 6.0.0-Alpha9 patches the issue.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	capstone	sid	`5.0.9-1`	vulnerable
Debian	capstone	forky	`5.0.9-1`	vulnerable
Debian	capstone	trixie	`5.0.7-1~deb13u1`	vulnerable
Debian	capstone	bookworm	`4.0.2-5`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	capstone	source	sid	`(unfixed)`	not yet assigned	Not reported	[1144518]
Debian	capstone	source	forky	`(unfixed)`	not yet assigned	Not reported	[1144518]
Debian	capstone	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1144518]
Debian	capstone	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1144518]

[Debian bug #1144518]

Notes

[trixie] capstone: Minor issue [bookworm] capstone: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[capstone-tool]Affected
Source package: [capstone]
Details (2)
- 4.0.2-5 · amd64 · bookworm
  Affected
  nvd · capstone · debian · bookworm; nvd · capstone · debian · 12
- 4.0.2-5 · arm64 · bookworm
  Affected
  nvd · capstone · debian · bookworm; nvd · capstone · debian · 12
[libcapstone4]Affected
Source package: [capstone]
Details (2)
- 4.0.2-5 · amd64 · bookworm
  Affected
  nvd · capstone · debian · bookworm; nvd · capstone · debian · 12
- 4.0.2-5 · arm64 · bookworm
  Affected
  nvd · capstone · debian · bookworm; nvd · capstone · debian · 12
[libcapstone-dev]Affected
Source package: [capstone]
Details (2)
- 4.0.2-5 · amd64 · bookworm
  Affected
  nvd · capstone · debian · bookworm; nvd · capstone · debian · 12
- 4.0.2-5 · arm64 · bookworm
  Affected
  nvd · capstone · debian · bookworm; nvd · capstone · debian · 12
[python3-capstone]Affected
Source package: [capstone]
Details (2)
- 4.0.2-5 · amd64 · bookworm
  Affected
  nvd · capstone · debian · bookworm; nvd · capstone · debian · 12
- 4.0.2-5 · arm64 · bookworm
  Affected
  nvd · capstone · debian · bookworm; nvd · capstone · debian · 12

[Debian 13 (Trixie)]

[capstone-tool]Affected
Source package: [capstone]
Details (2)
- 5.0.7-1~deb13u1 · amd64 · trixie
  Affected
  nvd · capstone · debian · 13
- 5.0.7-1~deb13u1 · arm64 · trixie
  Affected
  nvd · capstone · debian · 13
[libcapstone5]Affected
Source package: [capstone]
Details (2)
- 5.0.7-1~deb13u1 · amd64 · trixie
  Affected
  nvd · capstone · debian · 13
- 5.0.7-1~deb13u1 · arm64 · trixie
  Affected
  nvd · capstone · debian · 13
[libcapstone-dev]Affected
Source package: [capstone]
Details (2)
- 5.0.7-1~deb13u1 · amd64 · trixie
  Affected
  nvd · capstone · debian · 13
- 5.0.7-1~deb13u1 · arm64 · trixie
  Affected
  nvd · capstone · debian · 13
[python3-capstone]Affected
Source package: [capstone]
Details (2)
- 5.0.7-1~deb13u1 · amd64 · trixie
  Affected
  nvd · capstone · debian · 13
- 5.0.7-1~deb13u1 · arm64 · trixie
  Affected
  nvd · capstone · debian · 13

Observed: Oct 23, 2026, 9:41:59 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]