How severe is CVE-2025-11121?

CVE-2025-11121 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-11121 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-11121?

CVE-2025-11121 affects Tenda Ac18 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-11121?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-11121 have an EU (EUVD) identifier?

Yes. CVE-2025-11121 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31478.

When was CVE-2025-11121 published?

CVE-2025-11121 was published on 2025-09-28 and last updated on 2026-06-17.

CVE-2025-11121

CVE-2025-11121 is a medium-severity vulnerability in Tenda Ac18 Firmware with a CVSS 3.x base score of 6.3. 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-74.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-31478
Weakness: CWE-74
Affected product: Tenda Ac18 Firmware
Published: 2025-09-28
Last modified: 2026-06-17

Description

A security vulnerability has been detected in Tenda AC18 15.03.05.19. The impacted element is an unknown function of the file /goform/AdvSetLanip. The manipulation of the argument lanIp leads to command injection. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used.

Frequently asked questions

What is CVE-2025-11121?: A security vulnerability has been detected in Tenda AC18 15.03.05.19. The impacted element is an unknown function of the file /goform/AdvSetLanip. The manipulation of the argument lanIp leads to command injection. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used.
How severe is CVE-2025-11121?: CVE-2025-11121 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-11121 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-11121?: CVE-2025-11121 affects Tenda Ac18 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-11121?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-11121 have an EU (EUVD) identifier?: Yes. CVE-2025-11121 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31478.
When was CVE-2025-11121 published?: CVE-2025-11121 was published on 2025-09-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:ac18_firmware:15.03.05.19:*:*:*:*:*:*:*

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