CVE-2015-0618 — Cisco IOS XR 5.0.1 and 5.2.1 on Network Convergence System (NCS) 6000 devices and 5.1.3 and 5.1.4 on Carrier Routing System X (CRS-X) devices allows remote attackers to cause a denial of service (line-card reload) via malformed IPv6 packets with extension headers, aka Bug ID CSCuq95241

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HIGH

Cisco IOS XR 5.0.1 and 5.2.1 on Network Convergence System (NCS) 6000 devices and 5.1.3 and 5.1.4 on Carrier Routing System X (CRS-X) devices allows remote attackers to cause a denial of service (line-card reload) via malformed IPv6 packets with extension headers, aka Bug ID CSCuq95241

Published Feb 21, 2015

7.1

HIGH

CVSS 2.0

EPSS 2.32%

Description

Cisco IOS XR 5.0.1 and 5.2.1 on Network Convergence System (NCS) 6000 devices and 5.1.3 and 5.1.4 on Carrier Routing System X (CRS-X) devices allows remote attackers to cause a denial of service (line-card reload) via malformed IPv6 packets with extension headers, aka Bug ID CSCuq95241.

Affected products

Remediation

No remediation recorded yet.

Metrics

2.32% 0.02317

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.02317

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	2.32% (0.02317)	82.81th	v5 (v2026.06.15)
Jun 15, 2026	2.32% (0.02317)	81.14th	v5 (v2026.06.15)
Mar 17, 2025	0.56% (0.00563)	66.40th	v4 (v2025.03.14)
Dec 12, 2024	0.56% (0.00563)	78.47th	v3 (v2023.03.01)
Feb 8, 2024	0.56% (0.00563)	77.04th	v3 (v2023.03.01)
Mar 7, 2023	0.56% (0.00563)	74.33th	v3 (v2023.03.01)
Mar 6, 2023	1.14% (0.01136)	59.45th	v2 (v2022.01.01)
Oct 18, 2022	1.14% (0.01136)	58.28th	v2 (v2022.01.01)
Apr 1, 2022	1.14% (0.01136)	56.27th	v2 (v2022.01.01)
Feb 4, 2022	1.14% (0.01136)	34.23th	v2 (v2022.01.01)

Weaknesses (1)

CWE-19

References (3)

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150220-ipv6
vendor-advisoryx_refsource_CISCOVendor Advisory
http://www.securityfocus.com/bid/72713
vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1031778
vdb-entryx_refsource_SECTRACK

Link	Providers	Tags
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150220-ipv6		vendor-advisoryx_refsource_CISCOVendor Advisory
http://www.securityfocus.com/bid/72713		vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1031778		vdb-entryx_refsource_SECTRACK

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published Feb 21, 2015

Updated Aug 6, 2024

Reserved Jan 7, 2015

Link CVE-2015-0618

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-0618

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-0618