CVE-2018-25007Network attack vector

Server-state manipulation via unchecked UIDL property updates

Published Apr 23, 2021 · Updated Sep 16, 2024

Improper validation in Vaadin 10.0.0 through 10.0.7 and 11.0.0 through 11.0.2 allows remote authenticated users to alter server state. The UIDL request path applies crafted synchronization values through ElementPropertyMap without consistently rejecting properties that lack client-update permission. Exploitation requires an authenticated session and application logic that trusts an affected property, resulting in unintended integrity changes.

CVSS severity2.6
Low
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper validation in Vaadin 10.0.0 through 10.0.7 and 11.0.0 through 11.0.2 allows remote authenticated users to alter server state. The UIDL request path applies crafted synchronization values through ElementPropertyMap without consistently rejecting properties that lack client-update permission. Exploitation requires an authenticated session and application logic that trusts an affected property, resulting in unintended integrity changes.

The record

CVE
CVE-2018-25007
Published
Apr 23, 2021
Updated
Sep 16, 2024
Vendor
Vaadin
Product
Flow Server
Classifications
CWE-754, T1565.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 23, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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?

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 privilegesauthenticated

What is affected?

Vaadin · Flow Serverversion=1.0.0 <*
Vaadin · Vaadin Frameworkversion=10.0.0 <* changes=[{"at":"11.0.0","status":"affected"}]

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:P/A:N
2.6Vaadin Ltd.CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions
T1565.003Runtime Data Manipulation

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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