Missing hostname validation in Swisscom Centro Grande before 6.16.12 allows a remote attacker to inject its local IP address as a domain en…

published 2020-03-16 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-9529

cvss: 5.4; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

swisscom centro_grande_firmware 6.14.06

Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

swisscom.ch https://www.swisscom.ch/content/dam/swisscom/de/about/nachhaltigkeit/digitale-schweiz/sicherheit/bug-bounty/files/cve-2019-19940ff.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

swisscom.ch /content/dam/swisscom/de/about/nachhaltigkeit/digitale-schweiz/sicherheit/bug-bounty/files/cve-2019-19940ff.tx
exploit, vendor-advisory
swisscom.ch /en/residential/help/device/internet-router.html
product

Sources

CVE List CVE-2019-19941
NVD CVE-2019-19941

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary