CVE-2023-26314

HIGHNVD 8.88.8—

8.8

The mono package before 6.8.0.105+dfsg-3.3 for Debian allows arbitrary code execution because the application/x-ms-dos-executable MIME type is associated with an un-sandboxed Mono CLR interpreter.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 80.4%
KEV: Not listed

Published

February 22, 2023

Last Modified

May 20, 2026

Advisory Details (4)

Auto-updated May 19, 2026

🔬 Proof of concept available. Patch available.

generic

oss-security - Code execution through MIME-type association of Mono interpreter and security expectations of MIME type associations

https://www.openwall.com/lists/oss-security/2023/01/05/1

generic Patch Available

[SECURITY] [DLA 3343-1] mono security update

https://lists.debian.org/debian-lts-announce/2023/02/msg00037.html

generic Patch Available🟡 PoC Available

#972146 - /usr/share/applications/mono-runtime-common.desktop: should not handle MIME type by executing arbitrary code (CVE-2023-26314) - Debian Bug report logs

https://bugs.debian.org/972146

generic

oss-security - Re: On the issue of MIME handlers that execute arbitrary code (e.g. Wine)

http://www.openwall.com/lists/oss-security/2026/05/19/2

Vendor Advisories for CVE-2023-26314(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

GHSA-796j-2mh8-qff6
GitHub Security AdvisoriesHigh
The mono package before 6.8.0.105+dfsg-3.3 for Debian allows arbitrary code execution because the...

Frequently asked(5)

What is CVE-2023-26314?

CVE-2023-26314 is a high vulnerability published on February 22, 2023. The mono package before 6.8.0.105+dfsg-3.3 for Debian allows arbitrary code execution because the application/x-ms-dos-executable MIME type is associated with an un-sandboxed Mono CLR interpreter.

When was CVE-2023-26314 disclosed?

CVE-2023-26314 was first published in the National Vulnerability Database on February 22, 2023, with the most recent update on May 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-26314 actively exploited?

CVE-2023-26314 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 80.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-26314?

CVE-2023-26314 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2023-26314?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-26314, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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