CVE-2015-4291 — Cisco IOS XE 2.x before 2.4.3 and 2.5.x before 2.5.1 on ASR 1000 devices allows remote attackers to cause a denial of service (Embedded Services Processor crash) via a crafted series of fragmented (1) IPv4 or (2) IPv6 packets, aka Bug ID CSCtd72617

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HIGH

Cisco IOS XE 2.x before 2.4.3 and 2.5.x before 2.5.1 on ASR 1000 devices allows remote attackers to cause a denial of service (Embedded Services Processor crash) via a crafted series of fragmented (1) IPv4 or (2) IPv6 packets, aka Bug ID CSCtd72617

Published Aug 1, 2015

7.8

HIGH

CVSS 2.0

EPSS 1.98%

Description

Cisco IOS XE 2.x before 2.4.3 and 2.5.x before 2.5.1 on ASR 1000 devices allows remote attackers to cause a denial of service (Embedded Services Processor crash) via a crafted series of fragmented (1) IPv4 or (2) IPv6 packets, aka Bug ID CSCtd72617.

Remediation

No remediation recorded yet.

Metrics

1.98% 0.01982

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

EPSS probability 0.01982

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	1.98% (0.01982)	79.80th	v5 (v2026.06.15)
Jun 15, 2026	1.98% (0.01982)	77.89th	v5 (v2026.06.15)
Mar 17, 2025	0.97% (0.00968)	75.03th	v4 (v2025.03.14)
Dec 12, 2024	0.19% (0.00186)	57.24th	v3 (v2023.03.01)
Jul 10, 2024	0.19% (0.00186)	56.24th	v3 (v2023.03.01)
Mar 7, 2023	0.19% (0.00186)	54.19th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Sep 17, 2022	1.05% (0.01055)	50.47th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)

Weaknesses (1)

CWE-399

References (2)

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150730-asr1k
vendor-advisoryx_refsource_CISCOVendor Advisory
http://www.securitytracker.com/id/1033131
vdb-entryx_refsource_SECTRACK

Link	Providers	Tags
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150730-asr1k		vendor-advisoryx_refsource_CISCOVendor Advisory
http://www.securitytracker.com/id/1033131		vdb-entryx_refsource_SECTRACK

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published Aug 1, 2015

Updated Aug 6, 2024

Reserved Jun 4, 2015

Link CVE-2015-4291

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-4291

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-4291