CVE-2025-2043Network attack vector

Authenticated unspecified impact via Topic Key deserialization

Published Mar 6, 2025 · Updated Mar 6, 2025

Deserialization in LinZhaoguan pb-cms 1.0.0 allows remote authenticated users to cause unspecified impact via a crafted Topic Key. Public details identify the Add New Topic handler at /admin#themes but do not disclose the deserialization API or data flow that consumes Topic Key. Administrative access is required; no specific read, write, execution, or service-interruption consequence is documented.

CVSS severity5.1
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in LinZhaoguan pb-cms 1.0.0 allows remote authenticated users to cause unspecified impact via a crafted Topic Key. Public details identify the Add New Topic handler at /admin#themes but do not disclose the deserialization API or data flow that consumes Topic Key. Administrative access is required; no specific read, write, execution, or service-interruption consequence is documented.

The record

CVE
CVE-2025-2043
Published
Mar 6, 2025
Updated
Mar 6, 2025
Vendor
LinZhaoguan
Product
pb-cms
Classifications
CWE-20, CWE-502, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 6, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

LinZhaoguan · pb-cmsversion=1.0.0

Published CVSS scores

5.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
5.8VulDBAV:N/AC:L/Au:M/C:P/I:P/A:P
7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.7VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

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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