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LOW

CVE-2025-8549

CVE-2025-8549 — atjiu pybbs UserAdminController.java update weak password

A vulnerability was found in atjiu pybbs up to 6.0.0. It has been classified as critical. Affected is the function update of the file src/main/java/co/yiiu/pybbs/controller/admin/UserAdminController.java. The manipulation leads to weak password requirements. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. The patch is identified as d09cb19a8e7d7e5151282926ada54080244d499f. It is recommended to apply a patch to fix this issue.

Published Updated Sources: cvelistV5, VulDB

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.

Exploitation

Unreported

no source claims exploitation

EPSS

0%

chance of exploitation in 30 days

Affects

atjiu

pybbs

CVSS base

3.7

LOW

CISA SSVC assessment

Three decision points CISA publishes for the CVEs it assesses · SSVC 2.0.3. A stakeholder decision, not a severity score.

CISA

Exploitation

PoC

none · proof-of-concept · active

Automatable

No

can an attacker script all four kill-chain steps

Technical impact

Partial

partial · total control of the vulnerable component

Affected scope

The catalog records vendors and products as separate lists, not pairs, so which product belongs to which vendor is not something this page can say.

Vendors (1)

atjiu

Products (1)

pybbs

Every base score collected

Sources score independently and disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactSource
3.7CVSS 3.1LOW——cvelistV5

Weakness & attack patterns

  • CWE-521

Attack patterns reported against this CVE. The ATT&CK techniques below are inferred from its weakness class.

  • T1110Brute Force
  • T1110.001Brute Force: Password Guessing
  • T1558.003Steal or Forge Kerberos Tickets: Kerberoasting

Detection

Read off the CVSS vector and the weakness class. Starting points, not rules we have tested.

  • Search application, proxy, and WAF logs for requests touching /main/java/co/yiiu/pybbs/controller/admin/UserAdminController.java.

References

7 on the record

Elsewhere on this site

  • atjiuevery CVE for this vendor
  • CWE-521other pages naming this weakness

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.