How severe is CVE-2018-11135?

CVE-2018-11135 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-11135 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11135?

CVE-2018-11135 affects Quest Kace System Management Appliance. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-11135?

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

When was CVE-2018-11135 published?

CVE-2018-11135 was published on 2018-05-31 and last updated on 2026-06-17.

CVE-2018-11135

CVE-2018-11135 is a high-severity vulnerability in Quest Kace System Management Appliance with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1321.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.0
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Quest Kace System Management Appliance
Published: 2018-05-31
Last modified: 2026-06-17

Description

The script '/adminui/error_details.php' in the Quest KACE System Management Appliance 8.0.318 allows authenticated users to conduct PHP object injection attacks.

Frequently asked questions

What is CVE-2018-11135?: The script '/adminui/error_details.php' in the Quest KACE System Management Appliance 8.0.318 allows authenticated users to conduct PHP object injection attacks.
How severe is CVE-2018-11135?: CVE-2018-11135 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-11135 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11135?: CVE-2018-11135 affects Quest Kace System Management Appliance. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-11135?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-11135 published?: CVE-2018-11135 was published on 2018-05-31 and last updated on 2026-06-17.

References

https://www.coresecurity.com/advisories/quest-kace-system-management-appliance-multiple-vulnerabilities

Affected products (1)

cpe:2.3:a:quest:kace_system_management_appliance:8.0.318:*:*:*:*:*:*:*

More vulnerabilities in Quest Kace System Management Appliance

CVE-2018-11141 — Critical (CVSS 9.8): The 'IMAGES_JSON' and 'attachments_to_remove[]' parameters of the '/adminui/advisory.php' script in the Quest KACE…
CVE-2018-11140 — Critical (CVSS 9.8): The 'reportID' parameter received by the '/common/run_report.php' script in the Quest KACE System Management Appliance…
CVE-2018-11138 — Critical (CVSS 9.8): The '/common/download_agent_installer.php' script in the Quest KACE System Management Appliance 8.0.318 is accessible…
CVE-2018-11136 — Critical (CVSS 9.8): The 'orgID' parameter received by the '/common/download_agent_installer.php' script in the Quest KACE System Management…
CVE-2018-11139 — High (CVSS 8.8): The '/common/ajax_email_connection_test.php' script in the Quest KACE System Management Appliance 8.0.318 is accessible…
CVE-2018-11134 — High (CVSS 8.8): In order to perform actions that requires higher privileges, the Quest KACE System Management Appliance 8.0.318 relies…

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