How severe is CVE-2025-15542?

CVE-2025-15542 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2025-15542 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-15542?

CVE-2025-15542 affects Tp-link Vx800v Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-15542?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-15542 have an EU (EUVD) identifier?

Yes. CVE-2025-15542 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206533.

When was CVE-2025-15542 published?

CVE-2025-15542 was published on 2026-01-29 and last updated on 2026-06-17.

CVE-2025-15542

CVE-2025-15542 is a medium-severity vulnerability in Tp-link Vx800v Firmware with a CVSS 3.x base score of 5.3. 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-754.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v4: 6.3
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-206533
Weakness: CWE-754
Affected product: Tp-link Vx800v Firmware
Published: 2026-01-29
Last modified: 2026-06-17

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.

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 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2025-15542 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-15542?: CVE-2025-15542 affects Tp-link Vx800v Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-15542?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-15542 have an EU (EUVD) identifier?: Yes. CVE-2025-15542 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206533.
When was CVE-2025-15542 published?: CVE-2025-15542 was published on 2026-01-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tp-link:vx800v_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Tp-link Vx800v Firmware

CVE-2025-13399 — High (CVSS 8.8): A weakness in the web interface’s application layer encryption in VX800v v1.0 allows an adjacent attacker to brute…
CVE-2025-15548 — Medium (CVSS 6.5): Some VX800v v1.0 web interface endpoints transmit sensitive information over unencrypted HTTP due to missing…
CVE-2025-15541 — Medium (CVSS 6.3): Improper link resolution in the VX800v v1.0 SFTP service allows authenticated adjacent attackers to use crafted…
CVE-2025-15543 — Medium (CVSS 4.6): Improper link resolution in USB HTTP access path in VX800v v1.0 allows a crafted USB device to expose root filesystem…

All CVEs affecting Tp-link Vx800v Firmware →

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