How severe is CVE-2026-5228?

CVE-2026-5228 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-5228 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-5228?

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-2026-5228 have an EU (EUVD) identifier?

Yes. CVE-2026-5228 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34283.

When was CVE-2026-5228 published?

CVE-2026-5228 was published on 2026-06-04 and last updated on 2026-06-17.

CVE-2026-5228

CVE-2026-5228 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. 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-284.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34283
Weakness: CWE-284
Published: 2026-06-04
Last modified: 2026-06-17

Description

Improper Access Control, Missing Authorization vulnerability in Kurt Software Studio WriteUp Mobile App allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects WriteUp Mobile App: from 1.3.0 through 04062026.

Frequently asked questions

What is CVE-2026-5228?: Improper Access Control, Missing Authorization vulnerability in Kurt Software Studio WriteUp Mobile App allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects WriteUp Mobile App: from 1.3.0 through 04062026.
How severe is CVE-2026-5228?: CVE-2026-5228 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-5228 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-5228?: 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-2026-5228 have an EU (EUVD) identifier?: Yes. CVE-2026-5228 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34283.
When was CVE-2026-5228 published?: CVE-2026-5228 was published on 2026-06-04 and last updated on 2026-06-17.

References

https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0310

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