CVE-2023-43742Network attack vector

Administrative access via retained failed-authentication session

Published Dec 8, 2023 · Updated Aug 2, 2024

Authentication bypass in Zultys MX firmware 3.2.10 through 17.0.10 allows remote attackers to gain full administrative access. The TCP port 7505 administrator service reports a failed login but leaves the connection open and treats later requests on it as authenticated. No credentials or user interaction are required; network reachability to the service is sufficient for complete administrative control.

CVSS severity9.8
Critical
EPSS probability0.92%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Zultys MX firmware 3.2.10 through 17.0.10 allows remote attackers to gain full administrative access. The TCP port 7505 administrator service reports a failed login but leaves the connection open and treats later requests on it as authenticated. No credentials or user interaction are required; network reachability to the service is sufficient for complete administrative control.

The record

CVE
CVE-2023-43742
Published
Dec 8, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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