How severe is CVE-2023-38866?

CVE-2023-38866 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-2023-38866 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-38866?

CVE-2023-38866 affects Comfast Cf-xr11 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-38866?

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-2023-38866 published?

CVE-2023-38866 was published on 2023-08-15 and last updated on 2026-06-17.

CVE-2023-38866

CVE-2023-38866 is a critical-severity vulnerability in Comfast Cf-xr11 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% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Comfast Cf-xr11 Firmware
Published: 2023-08-15
Last modified: 2026-06-17

Description

COMFAST CF-XR11 V2.7.2 has a command injection vulnerability detected at function sub_415588. Attackers can send POST request messages to /usr/bin/webmgnt and inject commands into parameter interface and display_name.

Frequently asked questions

What is CVE-2023-38866?: COMFAST CF-XR11 V2.7.2 has a command injection vulnerability detected at function sub_415588. Attackers can send POST request messages to /usr/bin/webmgnt and inject commands into parameter interface and display_name.
How severe is CVE-2023-38866?: CVE-2023-38866 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-2023-38866 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-38866?: CVE-2023-38866 affects Comfast Cf-xr11 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-38866?: 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-2023-38866 published?: CVE-2023-38866 was published on 2023-08-15 and last updated on 2026-06-17.

References

https://github.com/TTY-flag/my_iot_vul/tree/main/COMFAST/CF-XR11/Command_Inject2

Affected products (1)

cpe:2.3:o:comfast:cf-xr11_firmware:2.7.2:*:*:*:*:*:*:*

More vulnerabilities in Comfast Cf-xr11 Firmware

CVE-2024-44466 — Critical (CVSS 9.8): COMFAST CF-XR11 V2.7.2 has a command injection vulnerability in function sub_424CB4. Attackers can send POST request…
CVE-2023-38864 — Critical (CVSS 9.8): An issue in COMFAST CF-XR11 v.2.7.2 allows an attacker to execute arbitrary code via the protal_delete_picname…
CVE-2023-38865 — Critical (CVSS 9.8): COMFAST CF-XR11 V2.7.2 has a command injection vulnerability detected at function sub_4143F0. Attackers can send POST…
CVE-2023-38863 — Critical (CVSS 9.8): An issue in COMFAST CF-XR11 v.2.7.2 allows an attacker to execute arbitrary code via the ifname and mac parameters in…
CVE-2023-38862 — Critical (CVSS 9.8): An issue in COMFAST CF-XR11 v.2.7.2 allows an attacker to execute arbitrary code via the destination parameter of…
CVE-2025-57293 — High (CVSS 8.8): A command injection vulnerability in COMFAST CF-XR11 (firmware V2.7.2) exists in the multi_pppoe API, processed by the…

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