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CVE-2017-3867

16
FAUCET Score

CVE-2017-3867 describes a vulnerability in the BGP BFD implementation of Cisco Adaptive Security Appliance (ASA) Software, allowing an unauthenticated, remote attacker to bypass ACLs for specific TCP and UDP traffic. With a CVSS score of 5.3 (Medium), this vulnerability has a low attack complexity and requires no user interaction, potentially leading to unauthorized information disclosure. While the EPSS score is low and there is no evidence of active exploitation, exploit code, or significant community discussion, affected organizations should still apply available patches. This vulnerability is not listed on the CISA KEV catalog or Hot List.

Impacted Technologies

VendorProductVersion(s)CPE
6.3.1CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:6.3.1:*:*:*:*:*:*:*
9.6.2CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.6.2:*:*:*:*:*:*:*
9.6.2.1CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.6.2.1:*:*:*:*:*:*:*
9.6.2.2CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.6.2.2:*:*:*:*:*:*:*
9.6.2.3CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.6.2.3:*:*:*:*:*:*:*

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:L/A:N

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

Exploit Intelligence

EPSS Score
1.43%
Probability of exploitation in next 30 days
EPSS Percentile
70.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0143 is in the 52nd percentile among its peer group of 23,705 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, 0.0 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)

ciscoworkaround availablevia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-asa
MitigationVendor Advisory
securityfocus.com / bid/96926
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038051