How severe is CVE-2018-11143?

CVE-2018-11143 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-11143 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 38% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11143?

CVE-2018-11143 affects Quest Disk Backup. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-11143?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-11143 published?

CVE-2018-11143 was published on 2018-06-02 and last updated on 2026-06-17.

CVE-2018-11143

CVE-2018-11143 is a critical-severity vulnerability in Quest Disk Backup with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 38% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 38% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Quest Disk Backup
Published: 2018-06-02
Last modified: 2026-06-17

Description

Quest DR Series Disk Backup software version before 4.0.3.1 allows command injection (issue 1 of 46).

Frequently asked questions

What is CVE-2018-11143?: Quest DR Series Disk Backup software version before 4.0.3.1 allows command injection (issue 1 of 46).
How severe is CVE-2018-11143?: CVE-2018-11143 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-11143 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 38% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11143?: CVE-2018-11143 affects Quest Disk Backup. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-11143?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-11143 published?: CVE-2018-11143 was published on 2018-06-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:quest:disk_backup:*:*:*:*:*:*:*:*

More vulnerabilities in Quest Disk Backup

CVE-2018-11194 — High (CVSS 8.8): Quest DR Series Disk Backup software version before 4.0.3.1 allows privilege escalation (issue 6 of 6).
CVE-2018-11193 — High (CVSS 8.8): Quest DR Series Disk Backup software version before 4.0.3.1 allows privilege escalation (issue 5 of 6).
CVE-2018-11192 — High (CVSS 8.8): Quest DR Series Disk Backup software version before 4.0.3.1 allows privilege escalation (issue 4 of 6).
CVE-2018-11191 — High (CVSS 8.8): Quest DR Series Disk Backup software version before 4.0.3.1 allows privilege escalation (issue 3 of 6).
CVE-2018-11190 — High (CVSS 8.8): Quest DR Series Disk Backup software version before 4.0.3.1 allows privilege escalation (issue 2 of 6).
CVE-2018-11189 — High (CVSS 8.8): Quest DR Series Disk Backup software version before 4.0.3.1 allows privilege escalation (issue 1 of 6).

All CVEs affecting Quest Disk Backup →

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