Vulnerability Details : CVE-2021-40122
A vulnerability in an API of the Call Bridge feature of Cisco Meeting Server could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper handling of large series of message requests. An attacker could exploit this vulnerability by sending a series of messages to the vulnerable API. A successful exploit could allow the attacker to cause the affected device to reload, dropping all ongoing calls and resulting in a DoS condition.
Vulnerability category: Denial of service
Products affected by CVE-2021-40122
- cpe:2.3:a:cisco:meeting_server:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:meeting_server:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-40122
0.38%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 57 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-40122
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
Cisco Systems, Inc. | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-40122
-
Assigned by: ykramarz@cisco.com (Secondary)
-
The product does not release or incorrectly releases a resource before it is made available for re-use.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-40122
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cms-LAHe8z5v
Cisco Meeting Server Call Bridge Denial of Service VulnerabilityVendor Advisory
Jump to