Public proof of concept

CVE-2023-26866

A public proof of concept exists; no exploitation attested.

Published2023-04-04
WeaknessCWE-77

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

GreenPacket OH736's WR-1200 Indoor Unit, OT-235 with firmware versions M-IDU-1.6.0.3_V1.1 and MH-46360-2.0.3-R5-GP respectively are vulnerable to remote command injection. Commands are executed using pre-login execution and executed with root privileges allowing complete takeover.

Timeline

dates in UTC

2023-04-0413:15CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-26866?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-26866?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Greenpacket ot-235 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	= m-idu-1.6.0.3_v1.1	no fix published	NVD
—	= mh-46360-2.0.3-r5-gp	no fix published	NVD

Greenpacket wr-1200 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	= m-idu-1.6.0.3_v1.1	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 1 repository, unverifiedlionelmusonza/CVE-2023-26866

Sources

CISA-ADPSSVC decisionnone2025-02-13
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.19.82025-02-13
NVDCVSS 3.19.8read 2026-10-23
CISA-ADPweakness (CWE)CWE-772025-02-13
NVDweakness (CWE)CWE-77read 2026-10-23
FIRST EPSSEPSS score2.3 %2026-10-22
PoC-in-GitHubproof of concept1read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2023-04-04
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-26866?

Is CVE-2023-26866 actively exploited?

Active exploitation of CVE-2023-26866 has not been confirmed. Its EPSS score was 2.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-26866?

CVE-2023-26866 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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