Medium severity · published Oct 7, 2021
CVE-2021-42084
An issue was discovered in Zammad before 4.1.1
6.5
CVSS
0.9%
EPSS
No
On KEV
Description
An issue was discovered in Zammad before 4.1.1. An attacker with valid agent credentials may send a series of crafted requests that cause an endless loop and thus cause denial of service.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZA
Zammad · Zammad
before 4.1.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-42084
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-42084
Vendor Advisory
https://zammad.com/en/advisories/zaa-2021-11
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