Is CVE-2025-15542 in the CISA KEV catalog?

No. CVE-2025-15542 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-15542?

CVE-2025-15542 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2025-15542?

CVE-2025-15542 has an EPSS score of 0.25% (16th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-15542?

Upgrade vx800v firmware to 800.0.12 or later.

CVE & CISA-KEV Catalog

CVE-2025-15542

MEDIUM

5.3

CVSS v3

NVD

Description

Improper handling of exceptional conditions in VX800v v1.0 in SIP processing allows an attacker to flood the device with crafted INVITE messages, blocking all voice lines and causing a denial of service on incoming calls.

CWE-754

How to fix

Remediation Available

vx800v firmwareNVD

Affected:< 800.0.12Fixed in:800.0.12CVE-2025-15542derived 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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

0.25%probability of exploitation in 30 days

16thpercentile

Low risk: more likely to be exploited than 16% of all known CVEs.

References

Vendor Advisory1

tp-link.com

Product1

tp-link.com

Related Vulnerabilities

Other CWE-754 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-4367	High	8.8	73%	-	Fix
CVE-2022-39288	High	7.5	59%	-	Fix
CVE-2023-30591	High	7.5	54%	-	-
CVE-2023-41993	High	8.8	29%	KEV	Fix
CVE-2024-43044	High	8.8	29%	-	Fix
CVE-2024-3393	High	7.5	27%	KEV	Fix

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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.