How severe is CVE-2023-50440?

CVE-2023-50440 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-50440 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-50440?

CVE-2023-50440 primarily affects Primx Zed!. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-50440?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-50440 published?

CVE-2023-50440 was published on 2023-12-13 and last updated on 2026-06-17.

CVE-2023-50440

CVE-2023-50440 is a medium-severity vulnerability in Primx Zed! with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Primx Zed!
Published: 2023-12-13
Last modified: 2026-06-17

Description

ZED containers produced by PRIMX ZED! for Windows before Q.2020.3 (ANSSI qualification submission); ZED! for Windows before Q.2021.2 (ANSSI qualification submission); ZONECENTRAL for Windows before Q.2021.2 (ANSSI qualification submission); ZONECENTRAL for Windows before 2023.5; ZEDMAIL for Windows before 2023.5; ZED! for Windows, Mac, Linux before 2023.5; ZEDFREE for Windows, Mac, Linux before 2023.5; or ZEDPRO for Windows, Mac, Linux before 2023.5 can be modified by an unauthenticated attacker to include a UNC reference so that it could trigger network access to an attacker-controlled computer when opened by the victim.

Frequently asked questions

What is CVE-2023-50440?: ZED containers produced by PRIMX ZED! for Windows before Q.2020.3 (ANSSI qualification submission); ZED! for Windows before Q.2021.2 (ANSSI qualification submission); ZONECENTRAL for Windows before Q.2021.2 (ANSSI qualification submission); ZONECENTRAL for Windows before 2023.5; ZEDMAIL for Windows before 2023.5; ZED! for Windows, Mac, Linux before 2023.5; ZEDFREE for Windows, Mac, Linux before 2023.5; or ZEDPRO for Windows, Mac, Linux before 2023.5 can be modified by an unauthenticated attacker to include a UNC reference so that it could trigger network access to an attacker-controlled computer when opened by the victim.
How severe is CVE-2023-50440?: CVE-2023-50440 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-50440 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-50440?: CVE-2023-50440 primarily affects Primx Zed!. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-50440?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-50440 published?: CVE-2023-50440 was published on 2023-12-13 and last updated on 2026-06-17.

References

Affected products (11)

cpe:2.3:a:primx:zed\!:*:*:*:*:enterprise:linux:*:*
cpe:2.3:a:primx:zed\!:*:*:*:*:enterprise:macos:*:*
cpe:2.3:a:primx:zed\!:*:*:*:*:free:linux:*:*
cpe:2.3:a:primx:zed\!:*:*:*:*:free:macos:*:*
cpe:2.3:a:primx:zed\!:*:*:*:*:free:windows:*:*
cpe:2.3:a:primx:zed\!:*:*:*:*:pro:linux:*:*
cpe:2.3:a:primx:zed\!:*:*:*:*:pro:macos:*:*
cpe:2.3:a:primx:zed\!:*:*:*:*:pro:windows:*:*
cpe:2.3:a:primx:zed\!:*:*:*:*:enterprise:windows:*:*
cpe:2.3:a:primx:zedmail:*:*:*:*:*:windows:*:*
cpe:2.3:a:primx:zonecentral:*:*:*:*:*:windows:*:*

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