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CVE-2016-6465

19
FAUCET Score

CVE-2016-6465 describes a content filtering bypass vulnerability in Cisco AsyncOS Software affecting Cisco Email Security Appliances (ESAs) and Web Security Appliances (WSAs). An unauthenticated, remote attacker could exploit this flaw to bypass configured user filters, allowing malicious content to circumvent security scans. Rated Medium severity (CVSS 4.3), this vulnerability requires no privileges but does involve user interaction (UI:R), with a potential impact of information disclosure (C:L). There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
8.5.7-042CPE matchmatch criteria
cpe:2.3:a:cisco:email_security_appliance:8.5.7-042:*:*:*:*:*:*:*
9.7.2-047CPE matchmatch criteria
cpe:2.3:a:cisco:email_security_appliance:9.7.2-047:*:*:*:*:*:*:*
10.0.0-125CPE matchmatch criteria
cpe:2.3:a:cisco:email_security_appliance:10.0.0-125:*:*:*:*:*:*:*
10.0.0-232CPE matchmatch criteria
cpe:2.3:a:cisco:email_security_appliance:10.0.0-232:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.56%
Probability of exploitation in next 30 days
EPSS Percentile
72.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0156 is in the 85th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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-20161207-esa
Vendor Advisory
securityfocus.com / bid/94901
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037404
Third Party AdvisoryVDB Entry