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Vulnerability record · CVE-2018-8955 · published 24 October 2018

CVE-2018-8955: Bitdefender gravityzone improper verification of cryptographic signature vulnerability

Bitdefender · Gravityzone

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.

9.8 CVSS 3.0 Critical EPSS 4.3% · top 9.3% CWE-347 · Improper verification of cryptographic signature
9.8CVSS 3.0 base score, v2 7.5
4.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/149900/Bitdefender-GravityZone-Installer-Signature-Bypass-Code-Execution.html Third Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2018/Oct/44 Mailing ListThird Party Advisory
http://www.securitytracker.com/id/1041940 Third Party AdvisoryVDB Entry
https://labs.nettitude.com/blog/cve-2018-8955-bitdefender-gravityzone-arbitrary-code-execution/ ExploitThird Party Advisory
http://packetstormsecurity.com/files/149900/Bitdefender-GravityZone-Installer-Signature-Bypass-Code-Execution.html Third Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2018/Oct/44 Mailing ListThird Party Advisory
http://www.securitytracker.com/id/1041940 Third Party AdvisoryVDB Entry
https://labs.nettitude.com/blog/cve-2018-8955-bitdefender-gravityzone-arbitrary-code-execution/ ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2021-3554Bitdefender endpoint security tools improper access control vulnerabilityImproper Access Control vulnerability in the patchesUpdate API as implemented in Bitdefender Endpoint Security Tools for Linux as a relay role allows…EPSS 2.6%9.8CVE-2024-4177Bitdefender gravityzone server-side request forgery (ssrf) vulnerabilityA host whitelist parser issue in the proxy service implemented in the GravityZone Update Server allows an attacker to cause a server-side request for…EPSS 0.43%9.8CVE-2022-2830Bitdefender gravityzone deserialization of untrusted data vulnerabilityDeserialization of Untrusted Data vulnerability in the message processing component of Bitdefender GravityZone Console allows an attacker to pass uns…EPSS 0.92%9.8CVE-2021-3823Bitdefender gravityzone path traversal vulnerabilityImproper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the UpdateServer component of Bitdefender GravityZone…EPSS 1.1%9.8CVE-2017-8931Bitdefender gravityzone vulnerabilityBitdefender GravityZone VMware appliance before 6.2.1-35 might allow attackers to gain access with root privileges via unspecified vectors.EPSS 1.5%9.5CVE-2025-2244Bitdefender gravityzone deserialization of untrusted data vulnerabilityA vulnerability in the sendMailFromRemoteSource method in Emails.php  as used in Bitdefender GravityZone Console unsafely uses php unserialize() on u…EPSS 1.1%9.2CVE-2024-6980Bitdefender gravityzone error message information leak vulnerabilityA verbose error handling issue in the proxy service implemented in the GravityZone Update Server allows an attacker to cause a server-side request fo…EPSS 0.56%7.8CVE-2021-3960Bitdefender gravityzone path traversal vulnerabilityImproper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the UpdateServer component of Bitdefender GravityZone…EPSS 0.31%

Source: NIST National Vulnerability Database (record CVE-2018-8955), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.