CVE-2026-1358: Airleader Master · Unrestricted File Upload
Affects Airleader MasterSource CVE Database V5
Not known to be exploited · CVSS 9.8 Critical.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 1.2% chance of exploitation in 30 days – higher than 68% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 12 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Airleader GmbHAirleader Master | Affected
| Fixed in– |
AI-suggested
- Immediately restrict network access to Airleader Master web interfaces to trusted internal networks only, using firewalls and access control lists.
- Implement strict file upload validation controls at the web server or application layer, including whitelisting allowed file types and scanning uploads for malware.
- Employ network segmentation to isolate Airleader Master servers from general IT networks and the internet to reduce exposure.
- Monitor logs and network traffic for unusual file upload activity or unauthorized access attempts.
- Apply any vendor-provided patches or updates as soon as they become available.
- If patches are not yet available, consider temporary mitigations such as disabling file upload functionality or deploying web application firewalls (WAFs) with custom rules to block suspicious uploads.
- Conduct security awareness training for administrators managing Airleader Master systems to recognize and respond to potential exploitation attempts.
- Regularly back up critical configurations and data to enable recovery in case of compromise.
Description
Airleader Master versions 6.381 and prior allow for file uploads without restriction to multiple webpages running maximum privileges. This could allow an unauthenticated user to potentially obtain remote code execution on the server.
References
- cisa.gov/news-events/ics-advisories/icsa-26-043-10 (opens in a new tab)
- github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-043-10.json (opens in a new tab)
- airleader.us/contact/ (opens in a new tab)
- syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-044.txt (opens in a new tab)