CVE-2005-4275: Scientific Atlanta DPX2100 Cable Modem allows remote attackers to cause a denial of service (device crash) via

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HIGH 7.8MITIGATE

CVE-2005-4275 is a high-severity flaw (CVSS 7.8) affecting dpx2100 cable modem. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Scientific Atlanta DPX2100 Cable Modem allows remote attackers to cause a denial of service (device crash) via an IP packet with the same source and destination IPs and ports, and with the SYN flag set (aka LanD), as demonstrated using hping2. NOTE: the provenance of this issue is unknown; the details are obtained solely from third party information.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
EPSS exploit chance	2.8% (top 13%)
CISA exploited list	No
Published	2005-12-16
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: scientific atlanta

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2005-12-16 11:03 UTCPublished CVE record published
2026-06-16 22:18 UTCUpdated Record last modified

scientific atlanta dpx2100 cable modem MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Firmware

Install the latest firmware from the vendor advisory; if none, apply the vendor workaround.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Scientific Atlanta DPX2100 Cable Modem - LanD Packet Denial of Service

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-2005-4275?

dpx2100 cable modem: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-4275 being exploited?

CVE-2005-4275 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-2005-4275 affect?

CVE-2005-4275 affects dpx2100 cable modem. Severity is high (CVSS 7.8). Scientific Atlanta DPX2100 Cable Modem allows remote attackers to cause a denial of service (device crash) via an IP packet with the same source and destination IPs and ports, and with the SYN flag set (aka LanD), as demonstrated using hpin

How urgent is CVE-2005-4275?

Priority 54/100. High severity; Public exploit reference

References

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