CVE-2015-6421: cisco wide_area_application_services Resource Management Errors
Vulnerability summary
CVE-2015-6421 is a high (CVSS 7.8) Resource Management Errors vulnerability in cisco wide_area_application_services. EPSS estimates a 1.93% chance of exploitation in the next 30 days, higher than 79.8% of scored vulnerabilities.
Timeline
- 27-01-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
1.93%
Chance of exploitation in the next 30 days
Percentile
80%
Versus all other CVEs
30-day change
+0.02 pp
From 1.91% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco1 product
- wide_area_application_services5.1.1 | 5.1.1a | 5.1.1b | 5.1.1c | 5.1.1d | 5.2.1 | 5.2_base | 5.3.1 | 5.3.3 | 5.3.5 | 5.3.5a | 5.3.5b | 5.3.5c
1 vendor · 1 product
References
2 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127-waascifsVendor AdvisoryX Refsource CISCO