CVE-2015-6343 — The SIP implementation in Cisco IOS 15.5(3)M on Cisco Unified Border Element (CUBE) devices allows remote attackers to cause a denial of service via crafted SIP messages, aka Bug ID CSCuv79202

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MEDIUM

The SIP implementation in Cisco IOS 15.5(3)M on Cisco Unified Border Element (CUBE) devices allows remote attackers to cause a denial of service via crafted SIP messages, aka Bug ID CSCuv79202

Published Oct 31, 2015

5.0

MEDIUM

CVSS 2.0

EPSS 1.97%

Description

The SIP implementation in Cisco IOS 15.5(3)M on Cisco Unified Border Element (CUBE) devices allows remote attackers to cause a denial of service via crafted SIP messages, aka Bug ID CSCuv79202.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.97% 0.01966

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

EPSS probability 0.01966

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% (0.01966)	79.64th	v5 (v2026.06.15)
Jun 15, 2026	1.97% (0.01966)	77.70th	v5 (v2026.06.15)
Mar 17, 2025	0.68% (0.00677)	69.82th	v4 (v2025.03.14)
Dec 12, 2024	0.19% (0.00187)	57.37th	v3 (v2023.03.01)
Jul 2, 2024	0.19% (0.00187)	56.31th	v3 (v2023.03.01)
Mar 7, 2023	0.19% (0.00187)	54.31th	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 (1)

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151026-cube
vendor-advisoryx_refsource_CISCOVendor Advisory

Link	Providers	Tags
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151026-cube		vendor-advisoryx_refsource_CISCOVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published Oct 31, 2015

Updated Aug 6, 2024

Reserved Aug 17, 2015

Link CVE-2015-6343

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-6343

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-6343