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CVE-2018-11191

26
FAUCET Score

CVE-2018-11191 is a high-severity privilege escalation vulnerability affecting Quest DR Series Disk Backup software versions prior to 4.0.3.1. An authenticated attacker can exploit this flaw remotely with low complexity to gain full control over the system, leading to high impacts on confidentiality, integrity, and availability. Despite its critical CVSS score of 8.8, there is no public exploit code available, nor is it listed in the KEV catalog. The vulnerability has received minimal community discussion and media coverage, suggesting low current attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.0.3.1CPE matchmatch criteria
cpe:2.3:a:quest:disk_backup:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.71%
Probability of exploitation in next 30 days
EPSS Percentile
84.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0271 is in the 83rd percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/148003/Quest-DR-Series-Disk-Backup-Software-4.0.3-Code-Execution.html
Third Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2018/May/71
Mailing ListThird Party Advisory
coresecurity.com / advisories/quest-dr-series-disk-backup-multiple-vulnerabilities
Third Party Advisory