How severe is CVE-2018-7891?

CVE-2018-7891 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-7891 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-7891?

CVE-2018-7891 primarily affects Milestonesys Xprotect. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-7891?

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-2018-7891 published?

CVE-2018-7891 was published on 2018-04-30 and last updated on 2026-06-17.

CVE-2018-7891

CVE-2018-7891 is a high-severity vulnerability in Milestonesys Xprotect with a CVSS 3.x base score of 8.1. 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-502.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Milestonesys Xprotect
Published: 2018-04-30
Last modified: 2026-06-17

Description

The Milestone XProtect Video Management Software (Corporate, Expert, Professional+, Express+, Essential+) 2016 R1 (10.0.a) to 2018 R1 (12.1a) contains .NET Remoting endpoints that are vulnerable to deserialization attacks resulting in remote code execution.

Frequently asked questions

What is CVE-2018-7891?: The Milestone XProtect Video Management Software (Corporate, Expert, Professional+, Express+, Essential+) 2016 R1 (10.0.a) to 2018 R1 (12.1a) contains .NET Remoting endpoints that are vulnerable to deserialization attacks resulting in remote code execution.
How severe is CVE-2018-7891?: CVE-2018-7891 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-7891 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-7891?: CVE-2018-7891 primarily affects Milestonesys Xprotect. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-7891?: 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-2018-7891 published?: CVE-2018-7891 was published on 2018-04-30 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:milestonesys:xprotect:*:*:*:*:corporate:*:*:*
cpe:2.3:a:milestonesys:xprotect:*:*:*:*:essential\+:*:*:*
cpe:2.3:a:milestonesys:xprotect:*:*:*:*:expert:*:*:*
cpe:2.3:a:milestonesys:xprotect:*:*:*:*:express\+:*:*:*
cpe:2.3:a:milestonesys:xprotect:*:*:*:*:professional\+:*:*:*
cpe:2.3:a:siemens:siveillance_vms:*:*:*:*:*:*:*:*

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