Is CVE-2026-27816 actively exploited?

No active exploitation of CVE-2026-27816 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-27816 be exploited remotely?

Yes. CVE-2026-27816 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-27816?

CVE-2026-27816 has a CVSS score of 9.1 (CRITICAL).

HOME VULNERABILITIESCVE-2026-27816

CRITICAL

CVE-2026-27816

CWE-787Published: March 26, 2026· Updated: Mar 31, 2026

9.1

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.7th

Official Description

EVerest is an EV charging software stack. Prior to versions to 2026.02.0, ISO15118_chargerImpl::handle_update_energy_transfer_modes copies a variable-length list into a fixed-size array of length 6 without bounds checking. With schema validation disabled by default, oversized MQTT Cmd payloads can trigger out-of-bounds writes and corrupt adjacent EVSE state or crash the process. Version 2026.02.0 contains a patch.

NVD Source

Technical Analysis

CVE-2026-27816 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 full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.1.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.