How severe is CVE-2023-22279?

CVE-2023-22279 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-2023-22279 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-22279?

CVE-2023-22279 primarily affects Ate-mahoroba Maho-pbx Netdevancer Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-22279?

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-2023-22279 published?

CVE-2023-22279 was published on 2023-01-17 and last updated on 2026-06-17.

CVE-2023-22279

CVE-2023-22279 is a critical-severity vulnerability in Ate-mahoroba Maho-pbx Netdevancer 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Ate-mahoroba Maho-pbx Netdevancer Firmware
Published: 2023-01-17
Last modified: 2026-06-17

Description

MAHO-PBX NetDevancer Lite/Uni/Pro/Cloud prior to Ver.1.11.00, MAHO-PBX NetDevancer VSG Lite/Uni prior to Ver.1.11.00, and MAHO-PBX NetDevancer MobileGate Home/Office prior to Ver.1.11.00 allow a remote unauthenticated attacker to execute an arbitrary OS command.

Frequently asked questions

What is CVE-2023-22279?: MAHO-PBX NetDevancer Lite/Uni/Pro/Cloud prior to Ver.1.11.00, MAHO-PBX NetDevancer VSG Lite/Uni prior to Ver.1.11.00, and MAHO-PBX NetDevancer MobileGate Home/Office prior to Ver.1.11.00 allow a remote unauthenticated attacker to execute an arbitrary OS command.
How severe is CVE-2023-22279?: CVE-2023-22279 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-2023-22279 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-22279?: CVE-2023-22279 primarily affects Ate-mahoroba Maho-pbx Netdevancer Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-22279?: 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-2023-22279 published?: CVE-2023-22279 was published on 2023-01-17 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:o:ate-mahoroba:maho-pbx_netdevancer_firmware:*:*:*:*:lite:*:*:*
cpe:2.3:o:ate-mahoroba:maho-pbx_netdevancer_vsg_firmware:*:*:*:*:lite:*:*:*
cpe:2.3:o:ate-mahoroba:maho-pbx_netdevancer_mobilegate_firmware:*:*:*:*:home:*:*:*
cpe:2.3:o:ate-mahoroba:maho-pbx_netdevancer_firmware:*:*:*:*:uni:*:*:*
cpe:2.3:o:ate-mahoroba:maho-pbx_netdevancer_firmware:*:*:*:*:pro:*:*:*
cpe:2.3:o:ate-mahoroba:maho-pbx_netdevancer_firmware:*:*:*:*:cloud:*:*:*
cpe:2.3:o:ate-mahoroba:maho-pbx_netdevancer_vsg_firmware:*:*:*:*:uni:*:*:*
cpe:2.3:o:ate-mahoroba:maho-pbx_netdevancer_mobilegate_firmware:*:*:*:*:office:*:*:*

More vulnerabilities in Ate-mahoroba Maho-pbx Netdevancer Firmware

CVE-2023-22286 — High (CVSS 8.1): Cross-site request forgery (CSRF) vulnerability in MAHO-PBX NetDevancer Lite/Uni/Pro/Cloud prior to Ver.1.11.00,…
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CVE-2023-22296 — Medium (CVSS 6.1): Reflected cross-site scripting vulnerability in MAHO-PBX NetDevancer series MAHO-PBX NetDevancer Lite/Uni/Pro/Cloud…

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