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CVE-2016-6358

19
FAUCET Score

CVE-2016-6358 is a denial-of-service vulnerability affecting the local FTP service on Cisco Email Security Appliances (ESA) versions 9.1.0-032 and 9.7.1-000. An unauthenticated, remote attacker can exploit this flaw to cause the FTP application to unexpectedly quit, leading to a partial denial of service. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity, requiring no user interaction or privileges, and its primary impact is availability. 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
9.7.1-066CPE matchmatch criteria
cpe:2.3:a:cisco:email_security_appliance:9.7.1-066:*:*:*:*:*:*:*
9.7.2-046CPE matchmatch criteria
cpe:2.3:a:cisco:email_security_appliance:9.7.2-046:*:*:*:*:*:*:*
9.7.2-047CPE matchmatch criteria
cpe:2.3:a:cisco:email_security_appliance:9.7.2-047:*:*:*:*:*:*:*
9.7.2-054CPE matchmatch criteria
cpe:2.3:a:cisco:email_security_appliance:9.7.2-054:*:*:*:*:*:*:*
9.9.6-026CPE matchmatch criteria
cpe:2.3:a:cisco:email_security_appliance:9.9.6-026:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.75%
Probability of exploitation in next 30 days
EPSS Percentile
75.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0175 is in the 58th percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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-20161026-esa6
Vendor Advisory
securityfocus.com / bid/93905
securitytracker.com / id/1037115