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CVE-2018-1086

25
FAUCET Score

CVE-2018-1086 is a debug parameter removal bypass vulnerability affecting pcs before versions 0.9.164 and 0.10, impacting various ClusterLabs, Debian, and Red Hat products. The vulnerability, rated High severity (CVSS 7.5), allows a remote attacker with a valid token to elevate privileges by exploiting the pcsd service's failure to properly remove debug arguments from /run_pcs queries, potentially disclosing sensitive information. While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been observed, the flaw presents a clear risk for unauthorized access.

Impacted Technologies

VendorProductVersion(s)CPE
0.9.164CPE matchmatch criteria
cpe:2.3:a:clusterlabs:pacemaker_command_line_interface:0.9.164:*:*:*:*:*:*:*
0.10CPE matchmatch criteria
cpe:2.3:a:clusterlabs:pacemaker_command_line_interface:0.10:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
7.5CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
7.6CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
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
1.65%
Probability of exploitation in next 30 days
EPSS Percentile
74.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0165 is in the 56th percentile among its peer group of 51,466 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

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: pcs-0:0.9.155-3.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: pcs-0:0.9.162-5.el7_5.1
View patch

Vendor Advisories (1)

redhatCVE-2018-1086Moderate

pcs: Debug parameter removal bypass, allowing information disclosure

Apr 9, 2018

References

access.redhat.com / errata/RHSA-2018:1060
Third Party Advisory
access.redhat.com / errata/RHSA-2018:1927
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
debian.org / security/2018/dsa-4169
Third Party Advisory