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CVE-2016-6431

25
FAUCET Score

CVE-2016-6431 describes a vulnerability in Cisco ASA Software versions prior to 9.6(1.5) affecting the local Certificate Authority (CA) feature, which could lead to a denial-of-service condition. An unauthenticated, remote attacker can trigger a system reload by sending specially crafted HTTPS enrollment requests to the ASA interface where local CA user enrollment is enabled. This vulnerability has a CVSSv3 score of 7.5 (High), indicating a network-based attack with low complexity and high impact on 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
8.0.2.11CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:8.0.2.11:*:*:*:*:*:*:*
8.0.2.15CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:8.0.2.15:*:*:*:*:*:*:*
8.0.3CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:8.0.3:*:*:*:*:*:*:*
8.0.3.6CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:8.0.3.6:*:*:*:*:*:*:*
8.0.3.12CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:8.0.3.12:*:*:*:*:*:*:*

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
2.54%
Probability of exploitation in next 30 days
EPSS Percentile
83.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0254 is in the 70th percentile among its peer group of 51,506 CVEs.

Social Chatter

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-20161019-asa-ca
Vendor Advisory
securityfocus.com / bid/93786
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037060