CVE-2015-4293

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-07-30 · updated 2026-06-17
Weakness: CWE-399

Description

The packet-reassembly implementation in Cisco IOS XE 3.13S and earlier allows remote attackers to cause a denial of service (CPU consumption or packet loss) via fragmented (1) IPv4 or (2) IPv6 packets that trigger ATTN-3-SYNC_TIMEOUT errors after reassembly failures, aka Bug ID CSCuo37957.

Affected products

Cisco IOS XE: 2.1.0, 2.1.1, 2.1.2, 2.2.1, 2.2.2, 2.2.3 (+23)

References

http://tools.cisco.com/security/center/viewAlert.x?alertId=40215
http://www.securitytracker.com/id/1033122
http://tools.cisco.com/security/center/viewAlert.x?alertId=40215
http://www.securitytracker.com/id/1033122

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