How severe is CVE-2023-49409?

CVE-2023-49409 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-2023-49409 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-49409?

CVE-2023-49409 affects Tenda Ax3 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-49409?

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-2023-49409 published?

CVE-2023-49409 was published on 2023-12-07 and last updated on 2026-06-17.

CVE-2023-49409

CVE-2023-49409 is a critical-severity vulnerability in Tenda Ax3 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.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (71st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Tenda Ax3 Firmware
Published: 2023-12-07
Last modified: 2026-06-17

Description

Tenda AX3 V16.03.12.11 was discovered to contain a Command Execution vulnerability via the function /goform/telnet.

Frequently asked questions

What is CVE-2023-49409?: Tenda AX3 V16.03.12.11 was discovered to contain a Command Execution vulnerability via the function /goform/telnet.
How severe is CVE-2023-49409?: CVE-2023-49409 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-2023-49409 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-49409?: CVE-2023-49409 affects Tenda Ax3 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-49409?: 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-2023-49409 published?: CVE-2023-49409 was published on 2023-12-07 and last updated on 2026-06-17.

References

https://github.com/GD008/TENDA/blob/main/AX3/tenda_AX3_telnet/AX3_telnet.md

Affected products (1)

cpe:2.3:o:tenda:ax3_firmware:16.03.12.11:*:*:*:*:*:*:*

More vulnerabilities in Tenda Ax3 Firmware

CVE-2025-69764 — Critical (CVSS 9.8): Tenda AX3 firmware v16.03.12.11 contains a stack-based buffer overflow in the formGetIptv function due to improper…
CVE-2025-69766 — Critical (CVSS 9.8): Tenda AX3 firmware v16.03.12.11 contains a stack-based buffer overflow in the formGetIptv function due to improper…
CVE-2025-69763 — Critical (CVSS 9.8): Tenda AX3 firmware v16.03.12.11 contains a stack overflow in formSetIptv via the vlanId parameter, which can cause…
CVE-2025-69762 — Critical (CVSS 9.8): Tenda AX3 firmware v16.03.12.11 contains a stack overflow in formSetIptv via the list parameter, which can cause memory…
CVE-2023-51812 — Critical (CVSS 9.8): Tenda AX3 v16.03.12.11 was discovered to contain a remote code execution (RCE) vulnerability via the list parameter at…
CVE-2023-49408 — Critical (CVSS 9.8): Tenda AX3 V16.03.12.11 was discovered to contain a stack overflow via the function set_device_name.

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