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TI-2015-00548 Aliases CVE-2015-0593GHSA-j249-cxw7-qwrr

The Zone-Based Firewall implementation in Cisco IOS 12.4(122)T and earlier does not…

Priority LOW 34CWE-399Published · Updated

Key facts

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

Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.

Summary

The Zone-Based Firewall implementation in Cisco IOS 12.4(122)T and earlier does not properly manage session-object structures, which allows remote attackers to cause a denial of service (device reload) via crafted network traffic, aka Bug ID CSCul65003.

Why it matters now

EPSS 0.01548 75th 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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios:15.4\(1.12\)t:*:*:*:*:*:*:*15.4(1.12)tVulnerableCisco
cpe:2.3:o:cisco:ios:15.4\(1.19\)t:*:*:*:*:*:*:*15.4(1.19)tVulnerableCisco
  • cpe:2.3:o:cisco:ios:15.4\(1.12\)t:*:*:*:*:*:*:* Versions 15.4(1.12)t Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios:15.4\(1.19\)t:*:*:*:*:*:*:* Versions 15.4(1.19)t Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2015-0593
  2. 2026-10-03 Alias added: GHSA-j249-cxw7-qwrr

References

Advisory 2

  • 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