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CVE Record

CVE-2002-2148: Lucent Ascend MAX Router 5.0 and earlier, Lucent Ascend Pipeline Router 6.0.2 and earlier and Lucent DSLTer...

Lucent Ascend MAX Router 5.0 and earlier, Lucent Ascend Pipeline Router 6.0.2 and earlier and Lucent DSLTerminator allows remote attackers to obtain sensitive information such as hostname, MAC, and IP address of the Ethernet interface via a discard (UDP port 9) packet, which causes the device to leak the information in the response.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's Takemoderate

Analyst readout for executives and security teams

Plain-English summary

This is an old information disclosure issue in Lucent Ascend routing equipment. A remote party can send traffic to the discard service on UDP port 9 and receive device identifiers such as hostname, MAC address, and Ethernet interface IP address. The data is not direct control of the device, but it can support reconnaissance against exposed legacy network infrastructure.

Executive priority

Treat this as a targeted legacy-infrastructure cleanup item, not an emergency unless affected devices are internet-exposed. The business risk is intelligence leakage from old routing equipment, which can increase attacker knowledge during reconnaissance.

Technical view

CVE-2002-2148 affects Lucent Ascend MAX Router 5.0 and earlier, Ascend Pipeline Router 6.0.2 and earlier, and Lucent DSLTerminator. The flaw is triggered through UDP port 9 discard handling, causing sensitive Ethernet interface details to appear in the response. The sources provide no CVSS, CWE, vendor patch details, or confirmed exploit activity.

Likely exposure

Exposure is most likely where legacy Lucent Ascend MAX, Pipeline, or DSLTerminator devices remain reachable from untrusted networks with UDP port 9 accessible. Modern environments without these products are unlikely to be affected, but old ISP, telecom, or inherited network estates should verify inventories.

Exploitation context

The source bundle describes remote information disclosure but does not show active exploitation. CISA KEV status is false. The practical value is reconnaissance: leaked host, MAC, and IP details can help an attacker map legacy network devices and plan follow-on activity.

Researcher notes

Evidence is limited to the CVE description and legacy vulnerability references. The affected product names and versions are clear in the description, but the bundle provides no CVSS vector, CWE mapping, patch identifier, or vendor remediation statement. Avoid claiming exploitation without additional cited evidence.

Mitigation direction

  • Inventory for affected Lucent Ascend MAX, Pipeline, and DSLTerminator devices.
  • Block or restrict UDP port 9 access from untrusted networks.
  • Disable the discard service if supported by device configuration.
  • Check vendor or legacy support guidance for firmware or replacement options.
  • Retire unsupported affected devices where compensating controls are not reliable.

Validation and detection

  • Confirm whether affected Lucent Ascend products exist in asset inventory.
  • Review perimeter and internal firewall rules for UDP port 9 exposure.
  • Use approved scanning to verify UDP port 9 is not reachable from untrusted segments.
  • Check network monitoring for unexpected UDP port 9 traffic to legacy routers.
  • Document any compensating controls for devices that cannot be upgraded or retired.
Prepared
Confidence
medium
Sources
5

Public sources used

Based on public source material and reviewed before publication.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

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CVE-2002-2148 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.