CVE-2021-3552

Insufficient validation on regular expression in EPPUpdateService config file (VA-9825)

HIGH

7.5

CVSS Score

Published: November 24, 2021 at 02:40 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 component of Bitdefender Endpoint Security Tools allows an attacker to proxy requests to the relay server. This issue affects: Bitdefender Endpoint Security Tools versions prior to 6.6.27.390; versions prior to 7.1.2.33. Bitdefender GravityZone 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%

6.24.1-1

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCBroken Link

Source: [email protected]

https://www.bitdefender.com/support/security-advisories/insufficient-validation-regular-expression-eppupdateservice-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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