CVE-2025-15622

OAuth2 client-secret exposure via reversible encoding

Published Apr 17, 2026 · Updated Apr 17, 2026

Credential exposure in Sparx Systems Enterprise Architect 16.1.1627 allows local users to recover the plaintext OAuth2 client secret. The desktop client decodes the encoded secret into plaintext and supplies it during the OpenID token exchange. Local access to the installed client is required, and disclosure compromises OAuth2 client authentication during OpenID token requests.

CVSS severity6.2
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Credential exposure in Sparx Systems Enterprise Architect 16.1.1627 allows local users to recover the plaintext OAuth2 client secret. The desktop client decodes the encoded secret into plaintext and supplies it during the OpenID token exchange. Local access to the installed client is required, and disclosure compromises OAuth2 client authentication during OpenID token requests.

The record

CVE
CVE-2025-15622
Published
Apr 17, 2026
Updated
Apr 17, 2026
Vendor
Sparx Systems
Product
Enterprise Architect
Classifications
CWE-522, T1552
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 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=16.1.1627

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Sparx Systems · Enterprise Architectversion=16.1.1627

Published CVSS scores

6.2National Cyber Security Centre FinlandCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:H/SI:L/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-522Insufficiently Protected Credentials
T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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