High severity · published Apr 29, 2024
CVE-2024-0840
Grandstream UCM Series IP PBX HTTP Parameter Injection
8.8
CVSS
0.9%
EPSS
No
On KEV
Description
The Grandstream UCM Series IP PBX before firmware version 1.0.20.52 is affected by a parameter injection vulnerability in the HTTP interface. A remote and authenticated attacker can execute arbitrary code by sending a crafted HTTP request. Authentication may be possible using a default user and password. Affected models are the UCM6202, UCM6204, UCM6208, and UCM6510.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 59% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
US
UCM Series · Grandstream
before <1.0.20.52 · source: vendor
UF
Ucm6202 Firmware · Grandstream
before 1.0.20.52 · source: CISA
UF
Ucm6204 Firmware · Grandstream
before 1.0.20.52 · source: CISA
UF
Ucm6208 Firmware · Grandstream
before 1.0.20.52 · source: CISA
UF
Ucm6510 Firmware · Grandstream
before 1.0.20.52 · source: CISA