How severe is CVE-2023-27217?

CVE-2023-27217 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-2023-27217 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-27217?

CVE-2023-27217 affects Belkin F7c063 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-27217?

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-2023-27217 published?

CVE-2023-27217 was published on 2023-05-18 and last updated on 2026-06-17.

CVE-2023-27217

CVE-2023-27217 is a critical-severity vulnerability in Belkin F7c063 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-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Belkin F7c063 Firmware
Published: 2023-05-18
Last modified: 2026-06-17

Description

A stack-based buffer overflow in the ChangeFriendlyName() function of Belkin Smart Outlet V2 F7c063 firmware_2.00.11420.OWRT.PVT_SNSV2 allows attackers to cause a Denial of Service (DoS) via a crafted UPNP request.

Frequently asked questions

What is CVE-2023-27217?: A stack-based buffer overflow in the ChangeFriendlyName() function of Belkin Smart Outlet V2 F7c063 firmware_2.00.11420.OWRT.PVT_SNSV2 allows attackers to cause a Denial of Service (DoS) via a crafted UPNP request.
How severe is CVE-2023-27217?: CVE-2023-27217 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-2023-27217 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-27217?: CVE-2023-27217 affects Belkin F7c063 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-27217?: 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-2023-27217 published?: CVE-2023-27217 was published on 2023-05-18 and last updated on 2026-06-17.

References

https://sternumiot.com/iot-blog/mini-smart-plug-v2-vulnerability-buffer-overflow/

Affected products (1)

cpe:2.3:o:belkin:f7c063_firmware:2.00.11420.owrt.pvt_snsv2:*:*:*:*:*:*:*

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