Is CVE-2026-20781 actively exploited?

No active exploitation of CVE-2026-20781 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-20781 be exploited remotely?

Yes. CVE-2026-20781 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-20781?

CVE-2026-20781 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2026-20781

CRITICAL

CVE-2026-20781

CWE-306Published: February 27, 2026· Updated: Mar 5, 2026

9.8

CVSS v3.1

EPSS:0.08%probability of exploitation in 30 daysPercentile:24.0th

Official Description

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, unauthorized control of charging infrastructure, and

corruption of charging network data reported to the backend.

NVD Source

Technical Analysis

CVE-2026-20781 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

cloudcharge1 product

cloudcharge.se

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-03.json

ADVISORYhttps://www.cisa.gov/news-events/ics-advisories/icsa-26-057-03

News & Research Mentioning CVE-2026-20781

CloudCharge cloudcharge.se

CISA Alerts· Feb 26, 2026

View CSAF Summary Successful exploitation of these vulnerabilities could allow attackers to impersonate charging stations, hijack sessions, suppress or misroute legitimate traffic to cause large-scale denial of service, and manipulate data sent to the backend. The following versions of CloudCharge cloudcharge.se are affected: cloudcharge.se vers:all/* (CVE-2026-20781, CVE-2026-25114, CVE-2026-27652, CVE-2026-20733) CVSS Vendor Equipment Vulnerabilities v3 9.4 CloudCharge CloudCharge cloudcharge.se Missing Authentication for Critical Function, Improper Restriction of Excessive Authentication Attempts, Insufficient Session Expiration, Insufficiently Protected Credentials Background Critical Infrastructure Sectors: Energy, Transportation Systems Countri [xlite_meta score:63 src:CISA Alerts xlite_fp:3148c95196033703013b091ce007c998dff0c5462ed2976dd32c3867c2ec422d]