How severe is CVE-2026-4104?

CVE-2026-4104 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-2026-4104 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4104?

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.

Does CVE-2026-4104 have an EU (EUVD) identifier?

Yes. CVE-2026-4104 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34243.

When was CVE-2026-4104 published?

CVE-2026-4104 was published on 2026-06-04 and last updated on 2026-06-17.

CVE-2026-4104

CVE-2026-4104 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-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34243
Weakness: CWE-89
Published: 2026-06-04
Last modified: 2026-06-17

Description

Authorization bypass through User-Controlled SQL primary key vulnerability in Akmer Informatics Automation Industry and Trade Ltd. Co. TeknoPass allows SQL Injection. This issue affects TeknoPass: from 20210501 through 20260429.

Frequently asked questions

What is CVE-2026-4104?: Authorization bypass through User-Controlled SQL primary key vulnerability in Akmer Informatics Automation Industry and Trade Ltd. Co. TeknoPass allows SQL Injection. This issue affects TeknoPass: from 20210501 through 20260429.
How severe is CVE-2026-4104?: CVE-2026-4104 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-2026-4104 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-4104?: 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.
Does CVE-2026-4104 have an EU (EUVD) identifier?: Yes. CVE-2026-4104 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34243.
When was CVE-2026-4104 published?: CVE-2026-4104 was published on 2026-06-04 and last updated on 2026-06-17.

References

https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0309

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