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CVE-2018-0254

18
FAUCET Score

CVE-2018-0254 describes a vulnerability in the detection engine of Cisco Firepower System Software, specifically impacting devices configured with Intelligent Application Bypass (IAB) and a drop percentage threshold. This flaw allows an unauthenticated, remote attacker to bypass configured file action policies due to incorrect counting of dropped traffic. The vulnerability carries a CVSS score of 5.3 (Medium), indicating a low attack complexity and no user interaction required, potentially leading to unauthorized traffic entering the network. 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
6.1.0.5CPE matchmatch criteria
cpe:2.3:a:cisco:firepower_threat_defense:6.1.0.5:*:*:*:*:*:*:*
6.2.0.2CPE matchmatch criteria
cpe:2.3:a:cisco:firepower_threat_defense:6.2.0.2:*:*:*:*:*:*:*
6.2.1CPE matchmatch criteria
cpe:2.3:a:cisco:firepower_threat_defense:6.2.1:*:*:*:*:*:*:*
6.2.2CPE matchmatch criteria
cpe:2.3:a:cisco:firepower_threat_defense:6.2.2:*:*:*:*:*:*:*

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: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
1.23%
Probability of exploitation in next 30 days
EPSS Percentile
65.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0123 is in the 44th percentile among its peer group of 23,684 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-20180418-fss2
Vendor Advisory
securityfocus.com / bid/103940
Third Party AdvisoryVDB Entry