Medium severity · published Nov 13, 2021
CVE-2021-34357
A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running QmailAgent
6.1
CVSS
0.7%
EPSS
No
On KEV
Description
A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running QmailAgent. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions of QmailAgent: QmailAgent 3.0.2 ( 2021/08/25 ) and later
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QM
Qmailagent · Qnap
before 3.0.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-34357
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-34357
Vendor Advisory
https://www.qnap.com/en/security-advisory/qsa-21-47
More from Qmailagent
8.8
CVE-2021-34358
We have already fixed this vulnerability in the following versions of QmailAgent: QmailAgent 3.0.2 ( 2021/08/25 ) and later