Critical severity · published Mar 31, 2026
CVE-2026-30286
An arbitrary file overwrite vulnerability in Funambol, Inc
9.8
CVSS
0.7%
EPSS
No
On KEV
Description
An arbitrary file overwrite vulnerability in Funambol, Inc. Zefiro Cloud v32.0.2026011614 allows attackers to overwrite critical internal files via the file import process, leading to arbitrary code execution or information exposure.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZE
Zefiro · Funambol
32.0.2026011614 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-30286
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-30286
Third Party Advisory
https://github.com/Secsys-FDU/AF_CVEs/issues/14
Product
https://play.google.com/store/apps/details?id=com.funambol.zefiro
Not Applicable
https://secsys.fudan.edu.cn/
Product
https://zefiro.me/