How severe is CVE-2024-4236?

CVE-2024-4236 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-2024-4236 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-4236?

CVE-2024-4236 affects Tenda Ax1803 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-4236?

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-2024-4236 have an EU (EUVD) identifier?

Yes. CVE-2024-4236 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32788.

When was CVE-2024-4236 published?

CVE-2024-4236 was published on 2024-04-26 and last updated on 2026-06-17.

CVE-2024-4236

CVE-2024-4236 is a high-severity vulnerability in Tenda Ax1803 Firmware with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 15% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-121.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 15% (96th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-32788
Weakness: CWE-121
Affected product: Tenda Ax1803 Firmware
Published: 2024-04-26
Last modified: 2026-06-17

Description

A vulnerability, which was classified as critical, has been found in Tenda AX1803 1.0.0.1. This issue affects the function formSetSysToolDDNS of the file /goform/SetDDNSCfg. The manipulation of the argument serverName/ddnsUser/ddnsPwd/ddnsDomain leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-262127. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2024-4236?: A vulnerability, which was classified as critical, has been found in Tenda AX1803 1.0.0.1. This issue affects the function formSetSysToolDDNS of the file /goform/SetDDNSCfg. The manipulation of the argument serverName/ddnsUser/ddnsPwd/ddnsDomain leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-262127. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2024-4236?: CVE-2024-4236 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-2024-4236 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-4236?: CVE-2024-4236 affects Tenda Ax1803 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-4236?: 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-2024-4236 have an EU (EUVD) identifier?: Yes. CVE-2024-4236 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32788.
When was CVE-2024-4236 published?: CVE-2024-4236 was published on 2024-04-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:ax1803_firmware:1.0.0.1:*:*:*:*:*:*:*

More vulnerabilities in Tenda Ax1803 Firmware

CVE-2024-30621 — Critical (CVSS 9.8): Tenda AX1803 v1.0.0.1 contains a stack overflow via the serverName parameter in the function fromAdvSetMacMtuWan.
CVE-2024-30620 — Critical (CVSS 9.8): Tenda AX1803 v1.0.0.1 contains a stack overflow via the serviceName parameter in the function fromAdvSetMacMtuWan.
CVE-2023-51970 — Critical (CVSS 9.8): Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.stb.mode parameter in the function formSetIptv.
CVE-2023-51969 — Critical (CVSS 9.8): Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.city.vlan parameter in the function getIptvInfo.
CVE-2023-51968 — Critical (CVSS 9.8): Tenda AX1803 v1.0.0.1 contains a stack overflow via the adv.iptv.stballvlans parameter in the function getIptvInfo.
CVE-2023-51967 — Critical (CVSS 9.8): Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.stb.port parameter in the function getIptvInfo.

All CVEs affecting Tenda Ax1803 Firmware →

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