CVE-2023-50440

MEDIUM

5.5

CVSS Score

Published: December 13, 2023 at 12:00 AM UTC

Updated: June 17, 2026 at 06:39 AM UTC

3 products affected across 1 vendorZonecentralZedmailZed!

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Zed!· Primx

95%

v < 2023.5v < q.2020.32023.0 ≤ v < 2023.5q.2021.0 ≤ v < q.2021.2

Affected range stops below 2023.5, so it looks safe — our inference, not a vendor statement

Affected range stops below q.2020.3, so it looks safe — our inference, not a vendor statement

Affected range stops below q.2021.2, so it looks safe — our inference, not a vendor statement

Zedmail · Primx

95%

v < 2023.5

Affected range stops below 2023.5, so it looks safe — our inference, not a vendor statement

Zonecentral · Primx

95%

v < q.2021.22023.0 ≤ v < 2023.5

Affected range stops below 2023.5, so it looks safe — our inference, not a vendor statement

Affected range stops below q.2021.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.primx.eu/en/bulletins/security-bulletin-23B30931/

References (2)

Vendor Advisory

Source: [email protected]

https://www.primx.eu/en/bulletins/security-bulletin-23B30931/

Product

Source: [email protected]

https://www.primx.eu/fr/blog/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP

Attack Vector: LOCAL
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

NVD-CWE-noinfoCWE-284

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