CVE-2023-46963Public exploitNetwork attack vector

Unauthenticated management backend access via null password

Published Nov 4, 2023 · Updated Sep 5, 2024

Improper authentication in Yunfan Learning Examination System 6.5 allows remote attackers to access the management backend via a null password. The login function's server-side password verification accepts a password parameter set to null after client-side interception instead of rejecting the request. Knowledge of an account name is required; using an administrator name grants backend access and exposes information available to that account.

CVSS severity5.3
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Yunfan Learning Examination System 6.5 allows remote attackers to access the management backend via a null password. The login function's server-side password verification accepts a password parameter set to null after client-side interception instead of rejecting the request. Knowledge of an account name is required; using an administrator name grants backend access and exposes information available to that account.

The record

CVE
CVE-2023-46963
Published
Nov 4, 2023
Updated
Sep 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 5, 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

5.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

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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