How severe is CVE-2023-26866?

CVE-2023-26866 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-26866 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26866?

CVE-2023-26866 primarily affects Greenpacket Wr-1200 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-26866?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-26866 published?

CVE-2023-26866 was published on 2023-04-04 and last updated on 2026-06-17.

CVE-2023-26866

CVE-2023-26866 is a critical-severity vulnerability in Greenpacket Wr-1200 Firmware with a CVSS 3.x base score of 9.8. 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-77.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Greenpacket Wr-1200 Firmware
Published: 2023-04-04
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-26866?: 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.
How severe is CVE-2023-26866?: CVE-2023-26866 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-26866 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-26866?: CVE-2023-26866 primarily affects Greenpacket Wr-1200 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-26866?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-26866 published?: CVE-2023-26866 was published on 2023-04-04 and last updated on 2026-06-17.

References

https://github.com/lionelmusonza/CVE-2023-26866

Affected products (3)

cpe:2.3:o:greenpacket:wr-1200_firmware:m-idu-1.6.0.3_v1.1:*:*:*:*:*:*:*
cpe:2.3:o:greenpacket:ot-235_firmware:m-idu-1.6.0.3_v1.1:*:*:*:*:*:*:*
cpe:2.3:o:greenpacket:ot-235_firmware:mh-46360-2.0.3-r5-gp:*:*:*:*:*:*:*

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