Is CVE-2025-13399 in the CISA KEV catalog?

No. CVE-2025-13399 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-13399?

CVE-2025-13399 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2025-13399?

CVE-2025-13399 has an EPSS score of 0.15% (5th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-13399?

Upgrade vx800v firmware to 800.0.11 or later.

CVE & CISA-KEV Catalog

CVE-2025-13399

HIGH

8.8

CVSS v3

NVD

Description

A weakness in the web interface’s application layer encryption in VX800v v1.0 allows an adjacent attacker to brute force the weak AES key and decrypt intercepted traffic. Successful exploitation requires network proximity but no authentication, and may result in high impact to confidentiality, integrity, and availability of transmitted data.

CWE-331

How to fix

Remediation Available

vx800v firmwareNVD

Affected:< 800.0.11Fixed in:800.0.11CVE-2025-13399derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.15%probability of exploitation in 30 days

5thpercentile

Low risk: more likely to be exploited than 5% of all known CVEs.

References

Vendor Advisory1

tp-link.com

Product1

tp-link.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-09.