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CVE-2013-5469

25
FAUCET Score

CVE-2013-5469 is a denial-of-service vulnerability affecting Cisco IOS, stemming from improper TCP state transitions from ESTABLISHED to CLOSED. A remote attacker can exploit this by sending a crafted sequence of ACK and FIN packets, leading to a flood of ACK packets. With a CVSS score of 7.1, it is considered high severity due to its network attack vector and complete availability impact, though it requires medium attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:cisco:ios:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.1HIGH

AV:N/AC:M/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.36%
Probability of exploitation in next 30 days
EPSS Percentile
82.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0236 is in the 39th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

osvdb.org / 96764
exchange.xforce.ibmcloud.com / vulnerabilities/86794
tools.cisco.com / security/center/content/CiscoSecurityNotice/CVE-2013-5469
Vendor Advisory
securityfocus.com / bid/62083
securitytracker.com / id/1028969