CVE-2019-19941

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-03-16 · updated 2026-06-17
Weakness: CWE-79

Description

Missing hostname validation in Swisscom Centro Grande before 6.16.12 allows a remote attacker to inject its local IP address as a domain entry in the DNS service of the router via crafted hostnames in DHCP requests, causing XSS.

Affected products

Swisscom Centro Grande Firmware: before 6.14.06 — fixed in 6.14.06

How to fix

Upgrade to a fixed version: Swisscom Centro Grande Firmware 6.14.06. Check the vendor advisory for mitigations.

References

https://www.swisscom.ch/content/dam/swisscom/de/about/nachhaltigkeit/digitale-schweiz/sicherheit/bug-bounty/files/cve-2019-19940ff.txt
https://www.swisscom.ch/en/residential/help/device/internet-router.html
https://www.swisscom.ch/content/dam/swisscom/de/about/nachhaltigkeit/digitale-schweiz/sicherheit/bug-bounty/files/cve-2019-19940ff.txt
https://www.swisscom.ch/en/residential/help/device/internet-router.html

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