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CVE-2025-15542

MEDIUMCVSS 6.3/10EPSS 0.25%

Last modified

CVE-2025-15542 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. 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.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
5.3/10

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

CVSS 4.0
6.3/10

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.25%

16.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Tp-LinkVx800v Firmware< 800.0.12

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2025-15542?
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.
How severe is CVE-2025-15542?
CVE-2025-15542 has a CVSS score of 6.3/10 (MEDIUM severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.
How do I fix CVE-2025-15542?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-15542?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST