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CVE-2018-19666

24
FAUCET Score

CVE-2018-19666 describes a Directory Traversal vulnerability in OSSEC agents on Windows, specifically affecting versions through 3.1.0, as well as related Wazuh and Microsoft OSSEC products. This flaw allows a local attacker, who already possesses full access to the associated OSSEC server, to escalate privileges to NT AUTHORITY\SYSTEM. With a CVSS score of 7.8 (High), the vulnerability is easily exploitable with low attack complexity and no user interaction, leading to high impacts on confidentiality, integrity, and availability. Despite its severity, there is currently no evidence of active exploitation, publicly available exploit code in common frameworks like Metasploit or ExploitDB, nor significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.1.0CPE matchmatch criteria
cpe:2.3:a:ossec:ossec:*:*:*:*:*:*:*:*
>= 1.0.0, <= 2.1.1CPE matchmatch criteria
cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.78%
Probability of exploitation in next 30 days
EPSS Percentile
52.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0078 is in the 88th percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / ossec/ossec-hids/issues/1585
ExploitThird Party Advisory