How severe is CVE-2018-3852?

CVE-2018-3852 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-3852 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-3852?

CVE-2018-3852 affects Onssi Ocularis. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-3852?

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-2018-3852 published?

CVE-2018-3852 was published on 2018-06-06 and last updated on 2026-06-17.

CVE-2018-3852

CVE-2018-3852 is a high-severity vulnerability in Onssi Ocularis with a CVSS 3.x base score of 7.5. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Onssi Ocularis
Published: 2018-06-06
Last modified: 2026-06-17

Description

An exploitable denial of service vulnerability exists in the Ocularis Recorder functionality of Ocularis 5.5.0.242. A specially crafted TCP packet can cause a process to terminate resulting in denial of service. An attacker can send a crafted TCP packet to trigger this vulnerability.

Frequently asked questions

What is CVE-2018-3852?: An exploitable denial of service vulnerability exists in the Ocularis Recorder functionality of Ocularis 5.5.0.242. A specially crafted TCP packet can cause a process to terminate resulting in denial of service. An attacker can send a crafted TCP packet to trigger this vulnerability.
How severe is CVE-2018-3852?: CVE-2018-3852 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-3852 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-3852?: CVE-2018-3852 affects Onssi Ocularis. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-3852?: 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-2018-3852 published?: CVE-2018-3852 was published on 2018-06-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:onssi:ocularis:5.5.0.242:*:*:*:*:*:*:*

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