CVE-2026-27767: WebSocket endpoints lack proper authentication mechanisms, enabling attackers to perform unauthorized station

This month

CRITICAL 9.4REMOTEMITIGATE

CVE-2026-27767 is a critical-severity flaw (CVSS 9.4) affecting swtchenergy.com. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

WebSocket endpoints lack proper authentication mechanisms, enabling attackers to perform unauthorized station impersonation and manipulate data sent to the backend. An unauthenticated attacker can connect to the OCPP WebSocket endpoint using a known or discovered charging station identifier, then issue or receive OCPP commands as a legitimate charger. Given that no authentication is required, this can lead to privilege escalation, unauthori

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.4 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-306
Published	2026-02-27
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: swtchenergy

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-27 00:16 UTCPublished CVE record published
2026-06-17 10:27 UTCUpdated Record last modified

swtchenergy swtchenergy.com MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy swtchenergy.com || rpm -q swtchenergy.com || swtchenergy.com --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-27767?

swtchenergy.com: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-27767 being exploited?

CVE-2026-27767 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-27767 affect?

CVE-2026-27767 affects swtchenergy.com. Severity is critical (CVSS 9.4). WebSocket endpoints lack proper authentication mechanisms, enabling attackers to perform unauthorized station impersonation and manipulate data sent to the backend. An unauthenticated attacker can connect to the OCPP WebSocket endpoint u

How urgent is CVE-2026-27767?

Priority 50/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-27773 MEDIUM 6.5 MITIGATE Charging station authentication identifiers are publicly accessible via web-based mapping platforms.
CVE-2026-25778 HIGH 7.3 MITIGATE The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple en
CVE-2026-25113 HIGH 7.5 MITIGATE The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests

References

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