CVE-2013-3436 — The default configuration of the Group Encrypted Transport VPN (GET VPN) feature on Cisco IOS uses an improper mechanism for enabling Group Domain of Interpretation (GDOI) traffic flow, which allows remote attackers to bypass the encryption policy via certain uses of UDP port 848, aka Bug ID CSCui07698

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MEDIUM

The default configuration of the Group Encrypted Transport VPN (GET VPN) feature on Cisco IOS uses an improper mechanism for enabling Group Domain of Interpretation (GDOI) traffic flow, which allows remote attackers to bypass the encryption policy via certain uses of UDP port 848, aka Bug ID CSCui07698

Published Jul 18, 2013

5.0

MEDIUM

CVSS 2.0

EPSS 1.43%

Description

The default configuration of the Group Encrypted Transport VPN (GET VPN) feature on Cisco IOS uses an improper mechanism for enabling Group Domain of Interpretation (GDOI) traffic flow, which allows remote attackers to bypass the encryption policy via certain uses of UDP port 848, aka Bug ID CSCui07698.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.43% 0.01429

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

EPSS probability 0.01429

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	1.43% (0.01429)	72.04th	v5 (v2026.06.15)
Jun 15, 2026	1.43% (0.01429)	69.43th	v5 (v2026.06.15)
Mar 17, 2025	0.20% (0.00197)	39.70th	v4 (v2025.03.14)
Dec 12, 2024	0.48% (0.00479)	76.63th	v3 (v2023.03.01)
Feb 8, 2024	0.48% (0.00479)	75.10th	v3 (v2023.03.01)
Mar 7, 2023	0.48% (0.00484)	72.23th	v3 (v2023.03.01)
Mar 6, 2023	1.32% (0.01319)	71.27th	v2 (v2022.01.01)
Feb 23, 2023	1.32% (0.01319)	71.23th	v2 (v2022.01.01)
Apr 1, 2022	1.32% (0.01319)	69.22th	v2 (v2022.01.01)
Feb 4, 2022	1.32% (0.01319)	44.98th	v2 (v2022.01.01)

Weaknesses (1)

CWE-264

References (6)

http://osvdb.org/95460
vdb-entryx_refsource_OSVDB
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-3436
vendor-advisoryx_refsource_CISCOVendor Advisory
http://tools.cisco.com/security/center/viewAlert.x?alertId=30140
x_refsource_CONFIRMVendor Advisory
http://www.securityfocus.com/bid/61362
vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1028810
vdb-entryx_refsource_SECTRACK
https://exchange.xforce.ibmcloud.com/vulnerabilities/85868
vdb-entryx_refsource_XF

Link	Providers	Tags
http://osvdb.org/95460		vdb-entryx_refsource_OSVDB
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-3436		vendor-advisoryx_refsource_CISCOVendor Advisory
http://tools.cisco.com/security/center/viewAlert.x?alertId=30140		x_refsource_CONFIRMVendor Advisory
http://www.securityfocus.com/bid/61362		vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1028810		vdb-entryx_refsource_SECTRACK
https://exchange.xforce.ibmcloud.com/vulnerabilities/85868		vdb-entryx_refsource_XF

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published Jul 18, 2013

Updated Aug 6, 2024

Reserved May 6, 2013

Link CVE-2013-3436

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2013-3436

Red Hat

Severity n/a

Public date n/a

Links CVE-2013-3436