How severe is CVE-2022-40109?

CVE-2022-40109 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-2022-40109 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-2022-40109?

CVE-2022-40109 affects Totolink A3002r Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-40109?

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-2022-40109 published?

CVE-2022-40109 was published on 2022-09-06 and last updated on 2026-06-17.

CVE-2022-40109

CVE-2022-40109 is a critical-severity vulnerability in Totolink A3002r 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-276.

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-276
Affected product: Totolink A3002r Firmware
Published: 2022-09-06
Last modified: 2026-06-17

Description

TOTOLINK A3002R TOTOLINK-A3002R-He-V1.1.1-B20200824.0128 is vulnerable to Insecure Permissions via binary /bin/boa.

Frequently asked questions

What is CVE-2022-40109?: TOTOLINK A3002R TOTOLINK-A3002R-He-V1.1.1-B20200824.0128 is vulnerable to Insecure Permissions via binary /bin/boa.
How severe is CVE-2022-40109?: CVE-2022-40109 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-2022-40109 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-2022-40109?: CVE-2022-40109 affects Totolink A3002r Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-40109?: 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-2022-40109 published?: CVE-2022-40109 was published on 2022-09-06 and last updated on 2026-06-17.

References

https://github.com/1759134370/iot/blob/main/TOTOLINK/A3002R/1.md

Affected products (1)

cpe:2.3:o:totolink:a3002r_firmware:1.1.1-b20200824.0128:*:*:*:*:*:*:*

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CVE-2019-19896 — Critical (CVSS 9.9): In IXP EasyInstall 6.2.13723, there is Remote Code Execution via weak permissions on the Engine Service share. The…
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