CVE-2026-30286
CVE-2026-30286 is a critical-severity vulnerability in Funambol Zefiro with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 1% (46th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-17579
- Weakness: CWE-22
- Affected product: Funambol Zefiro
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-30286?
- 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.
- How severe is CVE-2026-30286?
- CVE-2026-30286 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-30286 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-30286?
- CVE-2026-30286 affects Funambol Zefiro. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-30286?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2026-30286 have an EU (EUVD) identifier?
- Yes. CVE-2026-30286 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17579.
- When was CVE-2026-30286 published?
- CVE-2026-30286 was published on 2026-03-31 and last updated on 2026-06-17.
References
- https://github.com/Secsys-FDU/AF_CVEs/issues/14
- https://play.google.com/store/apps/details?id=com.funambol.zefiro
- https://secsys.fudan.edu.cn/
- https://zefiro.me/
Affected products (1)
- cpe:2.3:a:funambol:zefiro:32.0.2026011614:*:*:*:*:*:*:*
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