CVE-2018-8955

The installer for BitDefender GravityZone relies on an encoded string in a filename to determine...

9.8 Critical

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

4.26%Up 2.0 points since Apr 14, 2021

What each source reports

NVD Score used 9.8

Record: CVE-2018-8955
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-347
Updated: 2026-11-02

CVE List No score

Record: CVE-2018-8955
Updated: 2026-11-02

EUVDEUVD-2018-20562 No score

Record: EUVD-2018-20562
Updated: 2026-11-03

GitHub AdvisoriesGHSA-mf9c-7798-47gf 9.8

The installer for BitDefender GravityZone relies on an encoded string in a filename to determine...

Record: GHSA-mf9c-7798-47gf
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-347
Updated: 2026-11-02

Affected products

bitdefender gravityzone

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-8955 is a critical vulnerability (CVSS 9.8) in Bitdefender Gravityzone, published October 24, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.26%, the 91st percentile. No source names a fixed version.