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TI-2015-05404 Aliases CVE-2015-6421GHSA-6f4r-2cf4-2gv2

cifs-ao in the CIFS optimization functionality on Cisco Wide Area Application Service…

Priority LOW 37CWE-399Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.

Summary

cifs-ao in the CIFS optimization functionality on Cisco Wide Area Application Service (WAAS) and Virtual WAAS (vWAAS) devices 5.x before 5.3.5d and 5.4 and 5.5 before 5.5.3 allows remote attackers to cause a denial of service (resource consumption and device reload) via crafted network traffic, aka Bug ID CSCus85330.

Why it matters now

EPSS 0.01931 80th 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 · 13

CPEVersionsRoleVendor
cpe:2.3:a:cisco:wide_area_application_services:5.1.1:*:*:*:*:*:*:*5.1.1VulnerableCisco
cpe:2.3:a:cisco:wide_area_application_services:5.1.1a:*:*:*:*:*:*:*5.1.1aVulnerableCisco
cpe:2.3:a:cisco:wide_area_application_services:5.1.1b:*:*:*:*:*:*:*5.1.1bVulnerableCisco
cpe:2.3:a:cisco:wide_area_application_services:5.1.1c:*:*:*:*:*:*:*5.1.1cVulnerableCisco
cpe:2.3:a:cisco:wide_area_application_services:5.1.1d:*:*:*:*:*:*:*5.1.1dVulnerableCisco
cpe:2.3:a:cisco:wide_area_application_services:5.2.1:*:*:*:*:*:*:*5.2.1VulnerableCisco
cpe:2.3:a:cisco:wide_area_application_services:5.2_base:*:*:*:*:*:*:*5.2_baseVulnerableCisco
cpe:2.3:a:cisco:wide_area_application_services:5.3.1:*:*:*:*:*:*:*5.3.1VulnerableCisco
cpe:2.3:a:cisco:wide_area_application_services:5.3.3:*:*:*:*:*:*:*5.3.3VulnerableCisco
cpe:2.3:a:cisco:wide_area_application_services:5.3.5:*:*:*:*:*:*:*5.3.5VulnerableCisco
  • cpe:2.3:a:cisco:wide_area_application_services:5.1.1:*:*:*:*:*:*:* Versions 5.1.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:wide_area_application_services:5.1.1a:*:*:*:*:*:*:* Versions 5.1.1a Vulnerable ·Cisco
  • cpe:2.3:a:cisco:wide_area_application_services:5.1.1b:*:*:*:*:*:*:* Versions 5.1.1b Vulnerable ·Cisco
  • cpe:2.3:a:cisco:wide_area_application_services:5.1.1c:*:*:*:*:*:*:* Versions 5.1.1c Vulnerable ·Cisco
  • cpe:2.3:a:cisco:wide_area_application_services:5.1.1d:*:*:*:*:*:*:* Versions 5.1.1d Vulnerable ·Cisco
  • cpe:2.3:a:cisco:wide_area_application_services:5.2.1:*:*:*:*:*:*:* Versions 5.2.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:wide_area_application_services:5.2_base:*:*:*:*:*:*:* Versions 5.2_base Vulnerable ·Cisco
  • cpe:2.3:a:cisco:wide_area_application_services:5.3.1:*:*:*:*:*:*:* Versions 5.3.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:wide_area_application_services:5.3.3:*:*:*:*:*:*:* Versions 5.3.3 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:wide_area_application_services:5.3.5:*:*:*:*:*:*:* Versions 5.3.5 Vulnerable ·Cisco
Show 3 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:cisco:wide_area_application_services:5.3.5a:*:*:*:*:*:*:*5.3.5aVulnerableCisco
cpe:2.3:a:cisco:wide_area_application_services:5.3.5b:*:*:*:*:*:*:*5.3.5bVulnerableCisco
cpe:2.3:a:cisco:wide_area_application_services:5.3.5c:*:*:*:*:*:*:*5.3.5cVulnerableCisco
  • cpe:2.3:a:cisco:wide_area_application_services:5.3.5a:*:*:*:*:*:*:* Versions 5.3.5a Vulnerable ·Cisco
  • cpe:2.3:a:cisco:wide_area_application_services:5.3.5b:*:*:*:*:*:*:* Versions 5.3.5b Vulnerable ·Cisco
  • cpe:2.3:a:cisco:wide_area_application_services:5.3.5c:*:*:*:*:*:*:* Versions 5.3.5c Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2015-6421
  2. 2026-10-03 Alias added: GHSA-6f4r-2cf4-2gv2

References

Advisory 1

  • TI-2013-03008 The web service framework in Cisco WAAS Software 4.x and 5.x before 5.0.3e, 5.1.x before… CVSS 2.0HIGH 10.0
  • TI-2013-03009 The web framework in Cisco WAAS Software before 4.x and 5.x before 5.0.3e, 5.1.x before… CVSS 2.0HIGH 9.0
  • TI-2014-01739 Cisco Wide Area Application Services (WAAS) 5.1.1 before 5.1.1e, when SharePoint prefetch… CVSS 2.0HIGH 9.3
  • TI-2007-03800 The Common Internet File System (CIFS) optimization in Cisco Wide Area Application… CVSS 2.0HIGH 7.8
  • TI-2018-00288 Hard-coded credentials in Cisco Wide Area Application Services unknown CVSS 3.1MEDIUM 5.3
  • TI-2017-04387 Resource management flaw in Cisco Wide Area Application Services SMART-SSL Accelerator CVSS 3.0MEDIUM 6.8
See all 19 →

Sources

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