TI-2013-04675 Aliases CVE-2013-5476 GHSA-7w76-v7jx-gcpv

The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content…

LOW 38CWE-20Published 2013-09-27 · Updated 2024-09-16

Key facts

Attack vector: Network
Privileges required: None
User interaction: — Not recorded in CVSS 2.0
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · Complete
Fix status: No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.01887 79th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:ios:15.1:::::::*	15.1	Vulnerable	Cisco
cpe:2.3:o:cisco:ios:15.2:::::::*	15.2	Vulnerable	Cisco

cpe:2.3:o:cisco:ios:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·Cisco
cpe:2.3:o:cisco:ios:15.2:*:*:*:*:*:*:* Versions 15.2 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2013-5476
2026-10-03 Alias added: GHSA-7w76-v7jx-gcpv

References

Advisory 1

20130925 Cisco IOS Software Zone-Based Firewall and Content Filtering Vulnerability

TI-2018-00138 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
TI-2017-09019 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
TI-2017-02977 Improper input validation in Cisco IOS and IOS XE Software KEVCVSS 3.1CRITICAL 9.8
TI-2018-00135 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.8
TI-2017-04499 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
TI-2017-04498 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8

See all 617 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences