How severe is CVE-2024-4239?

CVE-2024-4239 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-4239 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-4239?

CVE-2024-4239 affects Tenda Ax1806 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-4239?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-4239 have an EU (EUVD) identifier?

Yes. CVE-2024-4239 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32791.

When was CVE-2024-4239 published?

CVE-2024-4239 was published on 2024-04-26 and last updated on 2026-06-17.

CVE-2024-4239

CVE-2024-4239 is a high-severity vulnerability in Tenda Ax1806 Firmware with a CVSS 3.x base score of 8.8. 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: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-32791
Weakness: CWE-787
Affected product: Tenda Ax1806 Firmware
Published: 2024-04-26
Last modified: 2026-06-17

Description

A vulnerability was found in Tenda AX1806 1.0.0.1 and classified as critical. Affected by this issue is the function formSetRebootTimer of the file /goform/SetRebootTimer. The manipulation of the argument rebootTime leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-262130 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2024-4239?: A vulnerability was found in Tenda AX1806 1.0.0.1 and classified as critical. Affected by this issue is the function formSetRebootTimer of the file /goform/SetRebootTimer. The manipulation of the argument rebootTime leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-262130 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2024-4239?: CVE-2024-4239 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-4239 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-4239?: CVE-2024-4239 affects Tenda Ax1806 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-4239?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-4239 have an EU (EUVD) identifier?: Yes. CVE-2024-4239 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32791.
When was CVE-2024-4239 published?: CVE-2024-4239 was published on 2024-04-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:ax1806_firmware:1.0.0.1:*:*:*:*:*:*:*

More vulnerabilities in Tenda Ax1806 Firmware

CVE-2024-44557 — Critical (CVSS 9.8): Tenda AX1806 v1.0.0.1 contains a stack overflow via the iptv.stb.mode parameter in the function setIptvInfo.
CVE-2024-44555 — Critical (CVSS 9.8): Tenda AX1806 v1.0.0.1 contains a stack overflow via the iptv.city.vlan parameter in the function setIptvInfo.
CVE-2024-44553 — Critical (CVSS 9.8): Tenda AX1806 v1.0.0.1 contains a stack overflow via the iptv.stb.mode parameter in the function formGetIptv.
CVE-2024-44552 — Critical (CVSS 9.8): Tenda AX1806 v1.0.0.1 contains a stack overflow via the adv.iptv.stballvlans parameter in the function formGetIptv.
CVE-2024-44551 — Critical (CVSS 9.8): Tenda AX1806 v1.0.0.1 contains a stack overflow via the iptv.city.vlan parameter in the function formGetIptv.
CVE-2024-44550 — Critical (CVSS 9.8): Tenda AX1806 v1.0.0.1 contains a stack overflow via the adv.iptv.stbpvid parameter in the function formGetIptv.

All CVEs affecting Tenda Ax1806 Firmware →

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