CVE-2023-50440

Credential exposure via embedded UNC reference

Published Dec 13, 2023 · Updated Jun 3, 2025

Improper access control in PRIMX ZED products before 2023.5 allows attackers to expose user credentials through a crafted container. A modified .ZED container embeds a UNC reference that makes the host contact an attacker-controlled system and issue an authentication request. The victim must open the container; the resulting outbound exchange exposes user privileges and potentially reusable credentials.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in PRIMX ZED products before 2023.5 allows attackers to expose user credentials through a crafted container. A modified .ZED container embeds a UNC reference that makes the host contact an attacker-controlled system and issue an authentication request. The victim must open the container; the resulting outbound exchange exposes user privileges and potentially reusable credentials.

The record

CVE
CVE-2023-50440
Published
Dec 13, 2023
Updated
Jun 3, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-284, T1187
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5PRIMXCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1187Forced Authentication

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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