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CVE-2016-1440

20
FAUCET Score

CVE-2016-1440 describes a denial-of-service vulnerability affecting Cisco Web Security Appliance (WSA) devices through version 9.1.0-070. An unauthenticated remote attacker can exploit this by establishing an FTP session and then improperly terminating the control connection after a file transfer, leading to high CPU consumption. This vulnerability has a CVSS v3 score of 5.3 (Medium), indicating a low-complexity attack that can be executed over the network without user interaction, resulting in a denial of service. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
5.6.0-623CPE matchmatch criteria
cpe:2.3:a:cisco:web_security_appliance:5.6.0-623:*:*:*:*:*:*:*
6.0.0-000CPE matchmatch criteria
cpe:2.3:a:cisco:web_security_appliance:6.0.0-000:*:*:*:*:*:*:*
7.1.0CPE matchmatch criteria
cpe:2.3:a:cisco:web_security_appliance:7.1.0:*:*:*:*:*:*:*
7.1.1CPE matchmatch criteria
cpe:2.3:a:cisco:web_security_appliance:7.1.1:*:*:*:*:*:*:*
7.1.2CPE matchmatch criteria
cpe:2.3:a:cisco:web_security_appliance:7.1.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.25%
Probability of exploitation in next 30 days
EPSS Percentile
66.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0125 is in the 45th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20160627-wsa
Vendor Advisory
securitytracker.com / id/1036188