How severe is CVE-2018-8955?

CVE-2018-8955 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-2018-8955 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-2018-8955?

CVE-2018-8955 affects Bitdefender Gravityzone. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-8955?

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-2018-8955 published?

CVE-2018-8955 was published on 2018-10-24 and last updated on 2026-06-17.

CVE-2018-8955

CVE-2018-8955 is a critical-severity vulnerability in Bitdefender Gravityzone with a CVSS 3.x base score of 9.8. 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-347.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-347
Affected product: Bitdefender Gravityzone
Published: 2018-10-24
Last modified: 2026-06-17

Description

The installer for BitDefender GravityZone relies on an encoded string in a filename to determine the URL for installation metadata, which allows remote attackers to execute arbitrary code by changing the filename while leaving the file's digital signature unchanged.

Frequently asked questions

What is CVE-2018-8955?: The installer for BitDefender GravityZone relies on an encoded string in a filename to determine the URL for installation metadata, which allows remote attackers to execute arbitrary code by changing the filename while leaving the file's digital signature unchanged.
How severe is CVE-2018-8955?: CVE-2018-8955 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-2018-8955 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-2018-8955?: CVE-2018-8955 affects Bitdefender Gravityzone. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-8955?: 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-2018-8955 published?: CVE-2018-8955 was published on 2018-10-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bitdefender:gravityzone:-:*:*:*:*:*:*:*

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