CVE-2013-5469 — The TCP implementation in Cisco IOS does not properly implement the transitions from the ESTABLISHED state to the CLOSED state, which allows remote attackers to cause a denial of service (flood of ACK packets) via a crafted series of ACK and FIN packets, aka Bug ID CSCtz14399

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HIGH

The TCP implementation in Cisco IOS does not properly implement the transitions from the ESTABLISHED state to the CLOSED state, which allows remote attackers to cause a denial of service (flood of ACK packets) via a crafted series of ACK and FIN packets, aka Bug ID CSCtz14399

Published Aug 30, 2013

7.1

HIGH

CVSS 2.0

EPSS 2.36%

Description

The TCP implementation in Cisco IOS does not properly implement the transitions from the ESTABLISHED state to the CLOSED state, which allows remote attackers to cause a denial of service (flood of ACK packets) via a crafted series of ACK and FIN packets, aka Bug ID CSCtz14399.

Affected products

Remediation

No remediation recorded yet.

Metrics

2.36% 0.02362

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.02362

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 2, 2026	2.36% (0.02362)	83.18th	v5 (v2026.06.15)
Jun 15, 2026	2.36% (0.02362)	81.52th	v5 (v2026.06.15)
Mar 17, 2025	0.75% (0.00746)	71.34th	v4 (v2025.03.14)
Dec 12, 2024	1.18% (0.01184)	85.72th	v3 (v2023.03.01)
Apr 16, 2024	1.18% (0.01184)	84.88th	v3 (v2023.03.01)
Mar 7, 2023	1.18% (0.01184)	82.87th	v3 (v2023.03.01)
Mar 6, 2023	1.21% (0.01213)	66.61th	v2 (v2022.01.01)
Feb 17, 2023	1.21% (0.01213)	66.22th	v2 (v2022.01.01)
Apr 1, 2022	1.21% (0.01213)	64.21th	v2 (v2022.01.01)
Feb 4, 2022	1.21% (0.01213)	40.54th	v2 (v2022.01.01)

Weaknesses (1)

CWE-119

Buffer Overflow

References (5)

http://osvdb.org/96764
vdb-entryx_refsource_OSVDB
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-5469
vendor-advisoryx_refsource_CISCOVendor Advisory
http://www.securityfocus.com/bid/62083
vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1028969
vdb-entryx_refsource_SECTRACK
https://exchange.xforce.ibmcloud.com/vulnerabilities/86794
vdb-entryx_refsource_XF

Link	Providers	Tags
http://osvdb.org/96764		vdb-entryx_refsource_OSVDB
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-5469		vendor-advisoryx_refsource_CISCOVendor Advisory
http://www.securityfocus.com/bid/62083		vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1028969		vdb-entryx_refsource_SECTRACK
https://exchange.xforce.ibmcloud.com/vulnerabilities/86794		vdb-entryx_refsource_XF

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published Aug 30, 2013

Updated Aug 6, 2024

Reserved Aug 22, 2013

Link CVE-2013-5469

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2013-5469

Red Hat

Severity n/a

Public date n/a

Links CVE-2013-5469