CVE-2014-3271 — The DHCPv6 implementation in Cisco IOS XR allows remote attackers to cause a denial of service (device crash) via a malformed packet, aka Bug IDs CSCum85558, CSCum20949, CSCul61849, and CSCul71149

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MEDIUM

The DHCPv6 implementation in Cisco IOS XR allows remote attackers to cause a denial of service (device crash) via a malformed packet, aka Bug IDs CSCum85558, CSCum20949, CSCul61849, and CSCul71149

Published May 20, 2014

5.0

MEDIUM

CVSS 2.0

EPSS 1.97%

Description

The DHCPv6 implementation in Cisco IOS XR allows remote attackers to cause a denial of service (device crash) via a malformed packet, aka Bug IDs CSCum85558, CSCum20949, CSCul61849, and CSCul71149.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.97% 0.01973

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

EPSS probability 0.01973

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	1.97% (0.01973)	79.71th	v5 (v2026.06.15)
Jun 15, 2026	1.97% (0.01973)	77.79th	v5 (v2026.06.15)
Mar 17, 2025	0.69% (0.00693)	70.16th	v4 (v2025.03.14)
Dec 12, 2024	0.13% (0.00133)	50.08th	v3 (v2023.03.01)
Jun 14, 2024	0.13% (0.00133)	48.62th	v3 (v2023.03.01)
Mar 7, 2023	0.13% (0.00133)	46.60th	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-20

Improper Input Validation

References (2)

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3271
vendor-advisoryx_refsource_CISCOVendor Advisory
http://www.securitytracker.com/id/1030259
vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry

Link	Providers	Tags
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3271		vendor-advisoryx_refsource_CISCOVendor Advisory
http://www.securitytracker.com/id/1030259		vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published May 20, 2014

Updated Aug 6, 2024

Reserved May 7, 2014

Link CVE-2014-3271

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2014-3271

Red Hat

Severity n/a

Public date n/a

Links CVE-2014-3271