How severe is CVE-2025-70648?

CVE-2025-70648 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-70648 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-70648?

CVE-2025-70648 affects Tenda Ax1803 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-70648?

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-2025-70648 have an EU (EUVD) identifier?

Yes. CVE-2025-70648 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3649.

When was CVE-2025-70648 published?

CVE-2025-70648 was published on 2026-01-21 and last updated on 2026-06-17.

CVE-2025-70648

CVE-2025-70648 is a high-severity vulnerability in Tenda Ax1803 Firmware with a CVSS 3.x base score of 7.5. 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-121.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3649
Weakness: CWE-121
Affected product: Tenda Ax1803 Firmware
Published: 2026-01-21
Last modified: 2026-06-17

Description

Tenda AX1803 v1.0.0.1 was discovered to contain a stack overflow in the security_5g parameter of the sub_727F4 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.

Frequently asked questions

What is CVE-2025-70648?: Tenda AX1803 v1.0.0.1 was discovered to contain a stack overflow in the security_5g parameter of the sub_727F4 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
How severe is CVE-2025-70648?: CVE-2025-70648 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-70648 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-70648?: CVE-2025-70648 affects Tenda Ax1803 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-70648?: 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-2025-70648 have an EU (EUVD) identifier?: Yes. CVE-2025-70648 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3649.
When was CVE-2025-70648 published?: CVE-2025-70648 was published on 2026-01-21 and last updated on 2026-06-17.

References

https://github.com/0-fool/VulnbyCola/blob/main/Tenda/AX-1803/6/1.md

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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