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Unrated severityNVD Advisory· Published Oct 2, 2013· Updated Jun 16, 2026

CVE-2013-5503

CVE-2013-5503

Description

The UDP process in Cisco IOS XR 4.3.1 does not free packet memory upon detecting full packet queues, which allows remote attackers to cause a denial of service (memory consumption) via UDP packets to listening ports, aka Bug ID CSCue69413.

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Affected products

2
  • Cisco Systems, Inc./iOS Xr2 versions
    cpe:2.3:o:cisco:ios_xr:4.3.1:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:cisco:ios_xr:4.3.1:*:*:*:*:*:*:*
    • (no CPE)range: = 4.3.1

Patches

Vulnerability mechanics

References

1

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