CVE-2019-19942Public exploitNetwork attack vector

DNS spoofing via unvalidated DHCP hostnames

Published Mar 16, 2020 · Updated Aug 5, 2024

DNS spoofing in affected Swisscom Centro routers allows remote attackers on the local network to redirect domain lookups through the router. The DHCP service accepts hostname fields containing arbitrary domains and registers them in the built-in DNS service against the requester's assigned local IP address. Local-network access is required; affected releases are Centro Grande before 6.16.12, Centro Business 1.0 before 7.10.18, and Centro Business 2.0 before 8.02.04.

CVSS severity7.5
High
EPSS probability1.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DNS spoofing in affected Swisscom Centro routers allows remote attackers on the local network to redirect domain lookups through the router. The DHCP service accepts hostname fields containing arbitrary domains and registers them in the built-in DNS service against the requester's assigned local IP address. Local-network access is required; affected releases are Centro Grande before 6.16.12, Centro Business 1.0 before 7.10.18, and Centro Business 2.0 before 8.02.04.

The record

CVE
CVE-2019-19942
Published
Mar 16, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 16, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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