CVE-2019-19942: Missing output sanitation in Swisscom Centro Grande Centro Grande before 6.16.12, Centro Business 1.0 (ADB) be

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HIGH 7.5REMOTEUPGRADEUPGRADE

CVE-2019-19942 is a high-severity flaw (CVSS 7.5) affecting centro grande firmware, centro business. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Missing output sanitation in Swisscom Centro Grande Centro Grande before 6.16.12, Centro Business 1.0 (ADB) before 7.10.18, and Centro Business 2.0 before 8.02.04 allows a remote attacker to perform DNS spoofing against the web interface via crafted hostnames in DHCP requests.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-20
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.

swisscom centro business UPGRADE

Affected: >= 1.0 and < 7.10.18 · >= 2.0 and < 8.02.04

Fixed in: 7.10.18, 8.02.04

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy centro-business || rpm -q centro-business || centro-business --version

2. UPGRADE to 7.10.18 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade centro-business

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade centro-business

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison centro-business sudo apt install centro-business=<VERSION_BEFORE_1.0> sudo apt-mark hold centro-business

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list centro-business sudo dnf downgrade centro-business-<VERSION_BEFORE_1.0> sudo dnf versionlock add centro-business

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2019-19942?

centro grande firmware: upgrade to 6.14.06; centro business: upgrade to 7.10.18, 8.02.04. Exact commands for each OS are on this page.

Is CVE-2019-19942 being exploited?

CVE-2019-19942 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-2019-19942 affect?

CVE-2019-19942 affects centro grande firmware, centro business. Severity is high (CVSS 7.5). Missing output sanitation in Swisscom Centro Grande Centro Grande before 6.16.12, Centro Business 1.0 (ADB) before 7.10.18, and Centro Business 2.0 before 8.02.04 allows a remote attacker to perform DNS spoofing against the web interface vi

How urgent is CVE-2019-19942?

Priority 55/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2019-19941 MEDIUM 5.4 UPGRADE Missing hostname validation in Swisscom Centro Grande before 6.16.12 allows a remote attacker to inject its lo
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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