CVE-2013-5476

Name: CVE-2013-5476
Creator: NVD / NIST
Published: 2013-09-27T10:08:04.257+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.94%

Last modified Jun 16, 2026

CVE-2013-5476 is a vulnerability of currently unknown severity. The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content filtering or HTTP ALG inspection is enabled, allows remote attackers to cause a denial of service (device reload or hang) via crafted IPv4 HTTP traffic, aka Bug ID CSCtx56174.. EPSS estimates a 1.94% chance of exploitation in the next 30 days.

Description

The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content filtering or HTTP ALG inspection is enabled, allows remote attackers to cause a denial of service (device reload or hang) via crafted IPv4 HTTP traffic, aka Bug ID CSCtx56174.

Metrics

EPSS Probability

1.94%

77.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Cisco	Ios	15.1
Cisco	Ios	15.2

References

Timeline

Published: Sep 27, 2013
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-5476?

How severe is CVE-2013-5476?

Severity scoring for CVE-2013-5476 is pending analysis. The EPSS model estimates a 1.94% probability of exploitation in the next 30 days.

How do I fix CVE-2013-5476?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-5476?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST