# CVE-2025-68114: Capstone doesn't check vsnprintf return in SStream_concat, allows stack buffer underflow and overflow

CVE-2025-68114 is fixed in 7 products on 1 platform, first by RHSA-2026:5224, released December 17, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-68114
- Priority: High
- CVSS: 9.8 (Important)
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 17, 2025
- Weakness: Buffer Underwrite ('Buffer Underflow')
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-68114

## Description

Capstone is a disassembly framework with the target of becoming the ultimate disasm engine for binary analysis and reversing in the security community.  Security Fix(es):  * capstone: Capstone: Memory corruption via unchecked vsnprintf return (CVE-2025-68114)  * capstone: Capstone: Heap buffer overflow via skipdata callback allows denial of service or arbitrary code execution. (CVE-2025-67873)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | capstone Debian 13.5 (trixie) | 5.0.7-1~deb13u1 | [DEBIAN-CVE-2025-68114](https://patchblox.com/security/data/fix/linux/debian-cve-2025-68114.md) | Dec 17, 2025 |
| Linux | capstone Debian 14 | 5.0.7-1 | [DEBIAN-CVE-2025-68114](https://patchblox.com/security/data/fix/linux/debian-cve-2025-68114.md) | Dec 17, 2025 |
| Linux | capstone RHEL 10 | 5.0.1-7.el10_0 | [RHSA-2026:5224](https://patchblox.com/security/data/fix/linux/rhsa-2026-5224.md) | Dec 17, 2025 |
| Linux | capstone RHEL 9 | 0:4.0.2-11.el9_7 | [RHSA-2026:4898](https://patchblox.com/security/data/fix/linux/rhsa-2026-4898.md) | Apr 15, 2026 |
| Linux | capstone almalinux 9 | 4.0.2-13.el9_8 | [ALSA-2026:39309](https://patchblox.com/security/data/fix/linux/alsa-2026-39309.md) | Jul 14, 2026 |
| Linux | capstone amzn 2023 | 4.0.2-9.amzn2023.0.5 | [ALAS2023-2026-1772](https://patchblox.com/security/data/fix/linux/alas2023-2026-1772.md) | May 25, 2026 |
| Linux | capstone ol 10 | 0:5.0.1-7.el10_1 | [ELSA-2026-6817](https://patchblox.com/security/data/fix/linux/elsa-2026-6817.md) | Apr 8, 2026 |
| Linux | capstone ol 9 | 0:4.0.2-11.el9_7 | [ELSA-2026-4898](https://patchblox.com/security/data/fix/linux/elsa-2026-4898.md) | Mar 18, 2026 |
| Linux | capstone opensuse-leap 15.6 | 4.0.2-150500.3.3.1 | [SUSE-SU-2026:0060-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0060-1.md) | Jan 7, 2026 |
| Linux | capstone rocky 10 | 0:5.0.1-7.el10_1 | [RLSA-2026:6817](https://patchblox.com/security/data/fix/linux/rlsa-2026-6817.md) | Apr 9, 2026 |
| Linux | capstone rocky 9 | 0:4.0.2-13.el9_8 | [RLSA-2026:39309](https://patchblox.com/security/data/fix/linux/rlsa-2026-39309.md) | Jul 15, 2026 |
| Linux | capstone sles 15.7 | 4.0.2-150500.3.3.1 | [SUSE-SU-2026:0060-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0060-1.md) | Jan 7, 2026 |
| Linux | capstone-debuginfo amzn 2023 | 4.0.2-9.amzn2023.0.5 | [ALAS2023-2026-1772](https://patchblox.com/security/data/fix/linux/alas2023-2026-1772.md) | May 25, 2026 |
| Linux | capstone-debugsource amzn 2023 | 4.0.2-9.amzn2023.0.5 | [ALAS2023-2026-1772](https://patchblox.com/security/data/fix/linux/alas2023-2026-1772.md) | May 25, 2026 |
| Linux | capstone-devel RHEL 9 | 0:4.0.2-11.el9_7 | [RHSA-2026:4898](https://patchblox.com/security/data/fix/linux/rhsa-2026-4898.md) | Apr 15, 2026 |
| Linux | capstone-devel almalinux 9 | 4.0.2-13.el9_8 | [ALSA-2026:39309](https://patchblox.com/security/data/fix/linux/alsa-2026-39309.md) | Jul 14, 2026 |
| Linux | capstone-devel amzn 2023 | 4.0.2-9.amzn2023.0.5 | [ALAS2023-2026-1772](https://patchblox.com/security/data/fix/linux/alas2023-2026-1772.md) | May 25, 2026 |
| Linux | capstone-devel ol 10 | 0:5.0.1-7.el10_1 | [ELSA-2026-6817](https://patchblox.com/security/data/fix/linux/elsa-2026-6817.md) | Apr 8, 2026 |
| Linux | capstone-devel ol 9 | 0:4.0.2-11.el9_7 | [ELSA-2026-4898](https://patchblox.com/security/data/fix/linux/elsa-2026-4898.md) | Mar 18, 2026 |
| Linux | capstone-java RHEL 9 | 0:4.0.2-11.el9_7 | [RHSA-2026:4898](https://patchblox.com/security/data/fix/linux/rhsa-2026-4898.md) | Apr 15, 2026 |
| Linux | capstone-java almalinux 10 | 5.0.1-7.el10_1 | [ALSA-2026:6817](https://patchblox.com/security/data/fix/linux/alsa-2026-6817.md) | Apr 7, 2026 |
| Linux | capstone-java almalinux 9 | 4.0.2-13.el9_8 | [ALSA-2026:39309](https://patchblox.com/security/data/fix/linux/alsa-2026-39309.md) | Jul 14, 2026 |
| Linux | capstone-java amzn 2023 | 4.0.2-9.amzn2023.0.5 | [ALAS2023-2026-1772](https://patchblox.com/security/data/fix/linux/alas2023-2026-1772.md) | May 25, 2026 |
| Linux | capstone-java ol 10 | 0:5.0.1-7.el10_1 | [ELSA-2026-6817](https://patchblox.com/security/data/fix/linux/elsa-2026-6817.md) | Apr 8, 2026 |
| Linux | capstone-java ol 9 | 0:4.0.2-11.el9_7 | [ELSA-2026-4898](https://patchblox.com/security/data/fix/linux/elsa-2026-4898.md) | Mar 18, 2026 |
| Linux | python3-capstone RHEL 9 | 0:4.0.2-11.el9_7 | [RHSA-2026:4898](https://patchblox.com/security/data/fix/linux/rhsa-2026-4898.md) | Apr 15, 2026 |
| Linux | python3-capstone almalinux 10 | 5.0.1-7.el10_1 | [ALSA-2026:6817](https://patchblox.com/security/data/fix/linux/alsa-2026-6817.md) | Apr 7, 2026 |
| Linux | python3-capstone almalinux 9 | 4.0.2-13.el9_8 | [ALSA-2026:39309](https://patchblox.com/security/data/fix/linux/alsa-2026-39309.md) | Jul 14, 2026 |
| Linux | python3-capstone amzn 2023 | 4.0.2-9.amzn2023.0.5 | [ALAS2023-2026-1772](https://patchblox.com/security/data/fix/linux/alas2023-2026-1772.md) | May 25, 2026 |
| Linux | python3-capstone ol 10 | 0:5.0.1-7.el10_1 | [ELSA-2026-6817](https://patchblox.com/security/data/fix/linux/elsa-2026-6817.md) | Apr 8, 2026 |
| Linux | python3-capstone ol 9 | 0:4.0.2-11.el9_7 | [ELSA-2026-4898](https://patchblox.com/security/data/fix/linux/elsa-2026-4898.md) | Mar 18, 2026 |
| Linux | python3-capstone-debuginfo amzn 2023 | 4.0.2-9.amzn2023.0.5 | [ALAS2023-2026-1772](https://patchblox.com/security/data/fix/linux/alas2023-2026-1772.md) | May 25, 2026 |

---

Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.