How severe is CVE-2026-90924?

CVE-2026-90924 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-90924 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-90924?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2026-90924 published?

CVE-2026-90924 was published on 2026-09-28.

CVE-2026-90924

CVE-2026-90924 is a critical-severity vulnerability with a CVSS 3.x base score of 9.8. 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-1392.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1392
Published: 2026-09-28
Last modified: 2026-09-28

Description

Use of default credentials vulnerability in Innotim Software, Telecommunications and Consultancy Trade Ltd. Co. Logsign SIEM allows Try Common or Default Usernames and Passwords. This issue affects Logsign SIEM: from 6.4.101 before 6.4.117.

Frequently asked questions

What is CVE-2026-90924?: Use of default credentials vulnerability in Innotim Software, Telecommunications and Consultancy Trade Ltd. Co. Logsign SIEM allows Try Common or Default Usernames and Passwords. This issue affects Logsign SIEM: from 6.4.101 before 6.4.117.
How severe is CVE-2026-90924?: CVE-2026-90924 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-90924 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-90924?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-90924 published?: CVE-2026-90924 was published on 2026-09-28.

References

https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1202

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