How severe is CVE-2026-15428?

CVE-2026-15428 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-15428 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-15428?

CVE-2026-15428 primarily affects Tp-link Archer Vx1800v Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-15428?

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.

When was CVE-2026-15428 published?

CVE-2026-15428 was published on 2026-07-14 and last updated on 2026-08-06.

CVE-2026-15428

CVE-2026-15428 is a high-severity vulnerability in Tp-link Archer Vx1800v 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-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.5
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Tp-link Archer Vx1800v Firmware
Published: 2026-07-14
Last modified: 2026-08-06

Description

An OS command injection vulnerability exists in Archer VX800v v1 due to insufficient input sanitization of the domain name parameter. An adjacent attacker who can access the relevant HTTP interface can modify the parameter to inject shell metacharacters, resulting in arbitrary code execution with root privileges. Successful exploitation may allow remote code execution and complete compromise of the device.

Frequently asked questions

What is CVE-2026-15428?: An OS command injection vulnerability exists in Archer VX800v v1 due to insufficient input sanitization of the domain name parameter. An adjacent attacker who can access the relevant HTTP interface can modify the parameter to inject shell metacharacters, resulting in arbitrary code execution with root privileges. Successful exploitation may allow remote code execution and complete compromise of the device.
How severe is CVE-2026-15428?: CVE-2026-15428 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-15428 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-15428?: CVE-2026-15428 primarily affects Tp-link Archer Vx1800v Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-15428?: 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.
When was CVE-2026-15428 published?: CVE-2026-15428 was published on 2026-07-14 and last updated on 2026-08-06.

References

Affected products (2)

cpe:2.3:o:tp-link:archer_vx1800v_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:archer_vx1800v_firmware:2.0.0:*:*:*:*:*:*:*

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