How severe is CVE-2023-26314?

CVE-2023-26314 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-26314 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26314?

CVE-2023-26314 primarily affects Mono-project Mono. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-26314?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-26314 published?

CVE-2023-26314 was published on 2023-02-22 and last updated on 2026-06-17.

CVE-2023-26314

CVE-2023-26314 is a high-severity vulnerability in Mono-project Mono with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mono-project Mono
Published: 2023-02-22
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-26314?: 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.
How severe is CVE-2023-26314?: CVE-2023-26314 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-26314 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-26314?: CVE-2023-26314 primarily affects Mono-project Mono. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-26314?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-26314 published?: CVE-2023-26314 was published on 2023-02-22 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:mono-project:mono:5.18.0.240\+dfsg-3:*:*:*:*:*:*:*
cpe:2.3:a:mono-project:mono:6.8.0.105\+dfsg-3:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

More vulnerabilities in Mono-project Mono

CVE-2015-2320 — Critical (CVSS 9.8): The TLS stack in Mono before 3.12.1 allows remote attackers to have unspecified impact via vectors related to…
CVE-2015-2318 — High (CVSS 8.1): The TLS stack in Mono before 3.12.1 allows man-in-the-middle attackers to conduct message skipping attacks and…
CVE-2012-3543 — High (CVSS 7.5): mono 2.10.x ASP.NET Web Form Hash collision DoS
CVE-2015-2319 — High (CVSS 7.5): The TLS stack in Mono before 3.12.1 makes it easier for remote attackers to conduct cipher-downgrade attacks to…

All CVEs affecting Mono-project Mono →