CVE-2021-3960

Local code execution via UpdateServer path traversal

Published Dec 16, 2021 · Updated Sep 16, 2024

Path traversal in the UpdateServer component of Bitdefender GravityZone before 3.3.8.272 allows local users to execute arbitrary code. Bitdefender identifies the productManager UpdateServer.KitsManager API but has not disclosed which pathname operation fails to restrict attacker-controlled input. Local access is required, with no prior privileges or user interaction, and successful exploitation executes code across a security boundary.

CVSS severity7.1
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Path traversal in the UpdateServer component of Bitdefender GravityZone before 3.3.8.272 allows local users to execute arbitrary code. Bitdefender identifies the productManager UpdateServer.KitsManager API but has not disclosed which pathname operation fails to restrict attacker-controlled input. Local access is required, with no prior privileges or user interaction, and successful exploitation executes code across a security boundary.

The record

CVE
CVE-2021-3960
Published
Dec 16, 2021
Updated
Sep 16, 2024
Vendor
Bitdefender
Product
GravityZone
Classifications
CWE-22, T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 16, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <3.3.8.272

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Bitdefender · GravityZoneversion=unspecified <3.3.8.272

Published CVSS scores

7.1BitdefenderCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6NVDAV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo