How severe is CVE-2026-5338?

CVE-2026-5338 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-5338 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5338?

CVE-2026-5338 affects Tenda G103 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5338?

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

Does CVE-2026-5338 have an EU (EUVD) identifier?

Yes. CVE-2026-5338 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18340.

When was CVE-2026-5338 published?

CVE-2026-5338 was published on 2026-04-02 and last updated on 2026-06-17.

CVE-2026-5338

CVE-2026-5338 is a medium-severity vulnerability in Tenda G103 Firmware with a CVSS 3.x base score of 4.7. 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-77.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
CVSS v2: 5.8
CVSS v4: 2.0
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18340
Weakness: CWE-77
Affected product: Tenda G103 Firmware
Published: 2026-04-02
Last modified: 2026-06-17

Description

A security vulnerability has been detected in Tenda G103 1.0.0.5. The affected element is the function action_set_system_settings of the file system.lua of the component Setting Handler. Such manipulation of the argument lanIp leads to command injection. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.

Frequently asked questions

What is CVE-2026-5338?: A security vulnerability has been detected in Tenda G103 1.0.0.5. The affected element is the function action_set_system_settings of the file system.lua of the component Setting Handler. Such manipulation of the argument lanIp leads to command injection. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.
How severe is CVE-2026-5338?: CVE-2026-5338 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-5338 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5338?: CVE-2026-5338 affects Tenda G103 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5338?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5338 have an EU (EUVD) identifier?: Yes. CVE-2026-5338 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18340.
When was CVE-2026-5338 published?: CVE-2026-5338 was published on 2026-04-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:g103_firmware:1.0.0.5:*:*:*:*:*:*:*

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