How severe is CVE-2023-37793?

CVE-2023-37793 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-2023-37793 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-37793?

CVE-2023-37793 affects Wayos Fbm-291w Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-37793?

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-2023-37793 published?

CVE-2023-37793 was published on 2023-07-14 and last updated on 2026-06-17.

CVE-2023-37793

CVE-2023-37793 is a critical-severity vulnerability in Wayos Fbm-291w 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-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Wayos Fbm-291w Firmware
Published: 2023-07-14
Last modified: 2026-06-17

Description

WAYOS FBM-291W 19.09.11V was discovered to contain a buffer overflow via the component /upgrade_filter.asp.

Frequently asked questions

What is CVE-2023-37793?: WAYOS FBM-291W 19.09.11V was discovered to contain a buffer overflow via the component /upgrade_filter.asp.
How severe is CVE-2023-37793?: CVE-2023-37793 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-2023-37793 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-37793?: CVE-2023-37793 affects Wayos Fbm-291w Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-37793?: 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-2023-37793 published?: CVE-2023-37793 was published on 2023-07-14 and last updated on 2026-06-17.

References

https://github.com/PwnYouLin/IOT_vul/blob/main/wayos/2/readme.md

Affected products (1)

cpe:2.3:o:wayos:fbm-291w_firmware:19.09.11v:*:*:*:*:*:*:*

More vulnerabilities in Wayos Fbm-291w Firmware

CVE-2023-37794 — Critical (CVSS 9.8): WAYOS FBM-291W 19.09.11V was discovered to contain a command injection vulnerability via the component…
CVE-2024-44383 — Medium (CVSS 6.8): WAYOS FBM-291W v19.09.11 is vulnerable to Command Execution via msp_info_htm.

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