How severe is CVE-2026-15429?

CVE-2026-15429 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-2026-15429 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-15429?

CVE-2026-15429 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-2026-15429?

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-2026-15429 published?

CVE-2026-15429 was published on 2026-07-14 and last updated on 2026-08-06.

CVE-2026-15429

CVE-2026-15429 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-93.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 5.1
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-93
Affected product: Tp-link Archer Vx1800v Firmware
Published: 2026-07-14
Last modified: 2026-08-06

Description

A privilege escalation vulnerability exists in the HTTP authentication component in Archer VX1800v v1. Improper handling of user-controlled input may allow newline characters to be injected into internally constructed configuration data. An authenticated user with sufficient privileges may be able to modify account settings and gain elevated administrative privileges.

Frequently asked questions

What is CVE-2026-15429?: A privilege escalation vulnerability exists in the HTTP authentication component in Archer VX1800v v1. Improper handling of user-controlled input may allow newline characters to be injected into internally constructed configuration data. An authenticated user with sufficient privileges may be able to modify account settings and gain elevated administrative privileges.
How severe is CVE-2026-15429?: CVE-2026-15429 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-2026-15429 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-15429?: CVE-2026-15429 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-2026-15429?: 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-2026-15429 published?: CVE-2026-15429 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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