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CVE-2013-5469
The TCP implementation in Cisco IOS does not properly implement the transitions from the ESTABLISHED state to the CLOSED state, which…
High7.1EPSS 2.4%
- Published
- Updated
- Reserved
- Assigned by
- cisco
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.1 | AV:N/AC:M/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 2.4% · top 16% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Weakness
Affected products
n/a
- affected n/a
References (5)
- 1028969 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 62083 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 20130830 Cisco IOS Software TCP ACK Storm Vulnerability (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- cisco-ios-cve20135469-dos(86794) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 96764 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2013-5469)Record last updated .