CVE-2026-42098Public exploitNetwork attack vector

Administrator impersonation via client-side authorization tampering

Published May 19, 2026 · Updated May 19, 2026

Client-side authorization in Sparx Systems Enterprise Architect 17.1 and earlier allows remote authenticated users to impersonate administrators. The desktop client enforces role restrictions and accepts a locally modified login flow, so debugger-assisted tampering can select any repository identity. Valid repository credentials and client modification are required; successful impersonation permits unrestricted repository changes.

CVSS severity8.7
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Client-side authorization in Sparx Systems Enterprise Architect 17.1 and earlier allows remote authenticated users to impersonate administrators. The desktop client enforces role restrictions and accepts a locally modified login flow, so debugger-assisted tampering can select any repository identity. Valid repository credentials and client modification are required; successful impersonation permits unrestricted repository changes.

The record

CVE
CVE-2026-42098
Published
May 19, 2026
Updated
May 19, 2026
Vendor
Sparx Systems
Product
Enterprise Architect
Classifications
CWE-603, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 19, 2026CVE publishedPublication date reported by the CVE source.
  2. May 19, 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=0 <=17.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Sparx Systems · Enterprise Architectversion=0 <=17.1

Published CVSS scores

8.7CERT.PLCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-603Use of Client-Side Authentication
T1078Valid Accounts

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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