How severe is CVE-2026-1815?

CVE-2026-1815 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-1815 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-1815?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-1815 have an EU (EUVD) identifier?

Yes. CVE-2026-1815 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31289.

When was CVE-2026-1815 published?

CVE-2026-1815 was published on 2026-05-21 and last updated on 2026-06-17.

CVE-2026-1815

CVE-2026-1815 is a medium-severity vulnerability with a CVSS 3.x base score of 5.7. 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-613.

Key facts

Severity: Medium (CVSS 3.x base score 5.7)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31289
Weakness: CWE-613
Published: 2026-05-21
Last modified: 2026-06-17

Description

Insufficient session expiration vulnerability in Turkiye Electricity Transmission Corporation (TEİAŞ) Mobile Application allows Session Hijacking. This issue affects Mobile Application: from 1.6.2 before 1.13.

Frequently asked questions

What is CVE-2026-1815?: Insufficient session expiration vulnerability in Turkiye Electricity Transmission Corporation (TEİAŞ) Mobile Application allows Session Hijacking. This issue affects Mobile Application: from 1.6.2 before 1.13.
How severe is CVE-2026-1815?: CVE-2026-1815 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-1815 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-1815?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-1815 have an EU (EUVD) identifier?: Yes. CVE-2026-1815 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31289.
When was CVE-2026-1815 published?: CVE-2026-1815 was published on 2026-05-21 and last updated on 2026-06-17.

References

https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0286

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