How severe is CVE-2026-27649?

CVE-2026-27649 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-27649 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27649?

CVE-2026-27649 affects Ctek Charge Portal. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27649?

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-2026-27649 have an EU (EUVD) identifier?

Yes. CVE-2026-27649 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13848.

When was CVE-2026-27649 published?

CVE-2026-27649 was published on 2026-03-20 and last updated on 2026-06-17.

CVE-2026-27649

CVE-2026-27649 is a high-severity vulnerability in Ctek Charge Portal with a CVSS 3.x base score of 7.3. 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: High (CVSS 3.x base score 7.3)
CVSS v4: 6.9
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13848
Weakness: CWE-613
Affected product: Ctek Charge Portal
Published: 2026-03-20
Last modified: 2026-06-17

Description

The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session identifier. This implementation results in predictable session identifiers and enables session hijacking or shadowing, where the most recent connection displaces the legitimate charging station and receives backend commands intended for that station. This vulnerability may allow unauthorized users to authenticate as other users or enable a malicious actor to cause a denial-of-service condition by overwhelming the backend with valid session requests.

Frequently asked questions

What is CVE-2026-27649?: The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session identifier. This implementation results in predictable session identifiers and enables session hijacking or shadowing, where the most recent connection displaces the legitimate charging station and receives backend commands intended for that station. This vulnerability may allow unauthorized users to authenticate as other users or enable a malicious actor to cause a denial-of-service condition by overwhelming the backend with valid session requests.
How severe is CVE-2026-27649?: CVE-2026-27649 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-27649 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27649?: CVE-2026-27649 affects Ctek Charge Portal. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27649?: 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-2026-27649 have an EU (EUVD) identifier?: Yes. CVE-2026-27649 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13848.
When was CVE-2026-27649 published?: CVE-2026-27649 was published on 2026-03-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ctek:charge_portal:-:*:*:*:*:*:*:*

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