High severity · published Dec 16, 2021
CVE-2021-3959
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…
7.5
CVSS
1.7%
EPSS
No
On KEV
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 Bitdefender GravityZone versions prior to 3.3.8.272
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GR
Gravityzone · Bitdefender
before 3.3.8.272 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3959
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3959
Vendor Advisory
https://www.bitdefender.com/support/security-advisories/server-side-request-forgery-in-bitdefender-gravityzone-update-server-in-relay-mode-va-10145
More from Gravityzone
10.0
CVE-2021-3554
Improper Access Control vulnerability in the patchesUpdate API as implemented in Bitdefender Endpoint Security Tools for Linux as a relay role allows an attacker to manipulate the…
9.8
CVE-2025-2244
A vulnerability in the sendMailFromRemoteSource method in Emails.php as used in Bitdefender GravityZone Console unsafely uses php unserialize() on user-supplied input without…
9.8
CVE-2024-6980
A verbose error handling issue in the proxy service implemented in the GravityZone Update Server allows an attacker to cause a server-side request forgery. This issue only affects…
9.8
CVE-2024-4177
A host whitelist parser issue in the proxy service implemented in the GravityZone Update Server allows an attacker to cause a server-side request forgery
9.8
CVE-2022-2830
Deserialization of Untrusted Data vulnerability in the message processing component of Bitdefender GravityZone Console allows an attacker to pass unsafe commands to the…