CVE-2025-41257Public exploitNetwork attack vector

Account takeover via server-unvalidated password change

Published Mar 4, 2026 · Updated Mar 4, 2026

Improper input validation in Suprema BioStar 2 2.9.11.6 allows remote attackers to take over accounts through a password change. The PUT /api/users/{id} endpoint accepts a new password after validation occurs only in the client, with no server-side check of the current password. Exploitation requires temporary possession of a valid session, after which the changed password provides persistent access to the affected account.

CVSS severity4.8
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Suprema BioStar 2 2.9.11.6 allows remote attackers to take over accounts through a password change. The PUT /api/users/{id} endpoint accepts a new password after validation occurs only in the client, with no server-side check of the current password. Exploitation requires temporary possession of a valid session, after which the changed password provides persistent access to the affected account.

The record

CVE
CVE-2025-41257
Published
Mar 4, 2026
Updated
Mar 4, 2026
Vendor
Suprema Inc.
Product
BioStar 2
Classifications
CWE-20, T1098
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 4, 2026Record 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=2.9.11.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Suprema Inc. · BioStar 2version=2.9.11.6

Published CVSS scores

4.8sba-researchCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/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 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 exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1098Account Manipulation

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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