CVE-2026-42098
CVE-2026-42098 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-603.
Key facts
- Severity: High (CVSS 4.0 base score 8.7)
- EPSS exploit prediction: 0% (32nd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-30930
- Weakness: CWE-603
- Published:
- Last modified:
Description
Sparx Enterprise Architect software has a security feature that limits user's actions to those specified in the role. An authenticated attacker can modify the Enterprise Architect client behavior (e.g. using a debugger) and log in as any other user or administrator - then it is possible to do every possible change to the repository. The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 17.1 and below were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.
Frequently asked questions
- What is CVE-2026-42098?
- Sparx Enterprise Architect software has a security feature that limits user's actions to those specified in the role. An authenticated attacker can modify the Enterprise Architect client behavior (e.g. using a debugger) and log in as any other user or administrator - then it is possible to do every possible change to the repository. The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 17.1 and below were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.
- How severe is CVE-2026-42098?
- CVE-2026-42098 has a CVSS 4.0 base score of 8.7, rated high severity.
- Is CVE-2026-42098 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-42098?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-42098 have an EU (EUVD) identifier?
- Yes. CVE-2026-42098 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30930.
- When was CVE-2026-42098 published?
- CVE-2026-42098 was published on 2026-05-19 and last updated on 2026-06-17.
References
- https://cert.pl/en/posts/2026/05/CVE-2026-42096
- https://efigo.pl/blog/CVE-2026-42096/
- https://sparxsystems.com/products/ea/
- https://sploit.tech/2026/05/19/Sparx-Enterprise-Architect-PCS.html
Other CWE-603 vulnerabilities
- CVE-2026-1363 — Critical (CVSS 9.8): IAQS and I6 developed by JNC has a Client-Side Enforcement of Server-Side Security vulnerability, allowing…
- CVE-2025-12868 — Critical (CVSS 9.8): New Site Server developed by CyberTutor has a Use of Client-Side Authentication vulnerability, allowing unauthenticated…
- CVE-2024-39375 — Critical (CVSS 9.8): TELSAT marKoni FM Transmitters are vulnerable to an attacker bypassing authentication and gaining administrator…
- CVE-2022-33139 — Critical (CVSS 9.8): A vulnerability has been identified in Cerberus DMS (All versions), Desigo CC (All versions), Desigo CC Compact (All…
- CVE-2025-64119 — Critical (CVSS 9.3): A vulnerability in Nuvation Battery Management System allows Authentication Bypass.This issue affects Battery…
- CVE-2020-7591 — High (CVSS 8.8): A vulnerability has been identified in SIPORT MP (All versions < 3.2.1). Vulnerable versions of the device could allow…