CVE-2019-19941: Missing hostname validation in Swisscom Centro Grande before 6.16.12 allows a remote attacker to inject its lo

Q: How do I fix CVE-2019-19941?

centro grande firmware: upgrade to 6.14.06. Exact commands for each OS are on this page.

Q: Is CVE-2019-19941 being exploited?

CVE-2019-19941 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-19941 affect?

CVE-2019-19941 affects centro grande firmware. Severity is medium (CVSS 5.4). 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.

Q: How urgent is CVE-2019-19941?

Priority 37/100. Public exploit reference

Routine

MEDIUM 5.4UPGRADE

CVE-2019-19941 is a medium-severity flaw (CVSS 5.4) affecting centro grande firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-03-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: swisscom

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-03-16 16:15 UTCPublished CVE record published
2026-06-17 02:27 UTCUpdated Record last modified

swisscom centro grande firmware UPGRADE

Affected: < 6.14.06

Fixed in: 6.14.06

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-19941?

centro grande firmware: upgrade to 6.14.06. Exact commands for each OS are on this page.

Is CVE-2019-19941 being exploited?

CVE-2019-19941 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-19941 affect?

CVE-2019-19941 affects centro grande firmware. Severity is medium (CVSS 5.4). 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.

How urgent is CVE-2019-19941?

Priority 37/100. Public exploit reference

Related CVEs

CVE-2019-19942 HIGH 7.5 UPGRADE UPGRADE Missing output sanitation in Swisscom Centro Grande Centro Grande before 6.16.12, Centro Business 1.0 (ADB) be
CVE-2019-19940 HIGH 7.2 UPGRADE Incorrect input sanitation in text-oriented user interfaces (telnet, ssh) in Swisscom Centro Grande before 6.1

References

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