How severe is CVE-2023-37721?

CVE-2023-37721 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-2023-37721 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-37721?

CVE-2023-37721 primarily affects Tenda F1202 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-37721?

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-2023-37721 published?

CVE-2023-37721 was published on 2023-07-14 and last updated on 2026-06-17.

CVE-2023-37721

CVE-2023-37721 is a critical-severity vulnerability in Tenda F1202 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% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Tenda F1202 Firmware
Published: 2023-07-14
Last modified: 2026-06-17

Description

Tenda F1202 V1.0BR_V1.2.0.20(408), FH1202_V1.2.0.19_EN were discovered to contain a stack overflow in the page parameter in the function fromSafeMacFilter.

Frequently asked questions

What is CVE-2023-37721?: Tenda F1202 V1.0BR_V1.2.0.20(408), FH1202_V1.2.0.19_EN were discovered to contain a stack overflow in the page parameter in the function fromSafeMacFilter.
How severe is CVE-2023-37721?: CVE-2023-37721 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-2023-37721 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-37721?: CVE-2023-37721 primarily affects Tenda F1202 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-37721?: 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-2023-37721 published?: CVE-2023-37721 was published on 2023-07-14 and last updated on 2026-06-17.

References

https://github.com/FirmRec/IoT-Vulns/blob/main/tenda/fromSafeMacFilter/report.md

Affected products (6)

cpe:2.3:o:tenda:f1202_firmware:1.2.0.20\(408\):*:*:*:*:*:*:*
cpe:2.3:o:tenda:fh1202_firmware:1.2.0.19_en:*:*:*:*:*:*:*
cpe:2.3:o:tenda:f1202_firmware:1.0br:*:*:*:*:*:*:*
cpe:2.3:o:tenda:4g300_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tenda:pw201a_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tenda:pa202_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Tenda F1202 Firmware

CVE-2024-30635 — Critical (CVSS 9.8): Tenda F1202 v1.2.0.20(408) has a stack overflow vulnerability located in the funcpara1 parameter in the formSetCfm…
CVE-2023-38939 — Critical (CVSS 9.8): Tenda F1202 V1.2.0.9 and FH1202 V1.2.0.9 were discovered to contain a stack overflow via the mit_ssid parameter in the…
CVE-2023-38938 — Critical (CVSS 9.8): Tenda F1202 V1.2.0.9, PA202 V1.1.2.5, PW201A V1.1.2.5 and FH1202 V1.2.0.9 were discovered to contain a stack overflow…
CVE-2023-38932 — Critical (CVSS 9.8): Tenda F1202 V1.2.0.9, PA202 V1.1.2.5, PW201A V1.1.2.5 and FH1202 V1.2.0.9 were discovered to contain a stack overflow…
CVE-2023-37723 — Critical (CVSS 9.8): Tenda F1202 V1.0BR_V1.2.0.20(408), FH1202_V1.2.0.19_EN were discovered to contain a stack overflow in the page…
CVE-2023-37722 — Critical (CVSS 9.8): Tenda F1202 V1.0BR_V1.2.0.20(408), FH1202_V1.2.0.19_EN were discovered to contain a stack overflow in the page…

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