Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-3554

33
FAUCET Score

CVE-2021-3554 is a critical Improper Access Control vulnerability in Bitdefender Endpoint Security Tools for Linux (relay role), Bitdefender Unified Endpoint, and Bitdefender GravityZone, allowing attackers to manipulate the remote address for patch updates. With a CVSS score of 10.0 (CRITICAL), this vulnerability poses a significant risk, enabling unauthenticated attackers to achieve complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or publicly available exploit code, the vulnerability has garnered notable community discussion, indicating awareness and potential future interest from threat actors.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.6.27.390CPE matchmatch criteria
cpe:2.3:a:bitdefender:endpoint_security_tools:*:*:*:*:*:*:*:*
< 6.6.27.390CPE matchmatch criteria
cpe:2.3:a:bitdefender:endpoint_security_tools:*:*:*:*:*:linux:*:*
>= 7.0.0.00, < 7.1.2.33CPE matchmatch criteria
cpe:2.3:a:bitdefender:endpoint_security_tools:*:*:*:*:*:*:*:*
< 6.24.1-1CPE matchmatch criteria
cpe:2.3:a:bitdefender:gravityzone:*:*:*:*:*:*:*:*
6.24.1-1CPE matchmatch criteria
cpe:2.3:a:bitdefender:gravityzone:6.24.1-1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.0CRITICAL

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.68%
Probability of exploitation in next 30 days
EPSS Percentile
84.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0268 is in the 75th percentile among its peer group of 36,821 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bitdefender.com / support/security-advisories/improper-access-control-vulnerability-patchesupdate-api-va-9825
Broken Link