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CVE-2021-3553

Server-Side Request Forgery in EPPUpdateService remote config file (VA-9825)

HIGH
7.5
CVSS Score
Published: November 24, 2021 at 02:45 PM UTC
Updated: June 17, 2026 at 04:05 AM UTC
2 products affected across 1 vendorGravityZoneEndpoint Security Tools

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

Description

A Server-Side Request Forgery (SSRF) vulnerability in the EPPUpdateService of Bitdefender Endpoint Security Tools allows an attacker to use the Endpoint Protection relay as a proxy for any remote host. This issue affects: Bitdefender Endpoint Security Tools versions prior to 6.6.27.390; versions prior to 7.1.2.33. Bitdefender Unified Endpoint for Linux versions prior to 6.2.21.160. Bitdefender GravityZone versions prior to 6.24.1-1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Endpoint Security Tools· Bitdefender
95%
v < 6.2.21.160v < 6.6.27.390v < 7.1.2.336.6.27.0 ≤ v < 6.6.27.3907.0.0.00 ≤ v < 7.1.2.33
Affected range stops below 6.2.21.160, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.6.27.390, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.1.2.33, so it looks safe — our inference, not a vendor statement
GravityZone· Bitdefender
95%
v < 6.24.1-16.24.1-1
Affected range stops below 6.24.1-1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCBroken Link
Source: [email protected]
https://www.bitdefender.com/support/security-advisories/server-side-request-forgery-eppupdateservice-remote-config-file-va-9825/
Vendor Advisory
Source: [email protected]
https://www.bitdefender.com/support/security-advisories/server-side-request-forgery-in-eppupdateservice-remote-config-file-va-9825/

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-918

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