Vulnerability · Published Jun 11, 2026 · Assigned by TR-CERT
CVE-2026-11839Arbitrary File Upload in Basarsoft's Rotaban
Critical 9.9
In plain English
A critical-severity unrestricted file upload in Rotaban from Başarsoft Information Technologies Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)0.3%top 73.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Unrestricted upload of file with dangerous type vulnerability in Başarsoft Information Technologies Inc. Rotaban allows Upload a Web Shell to a Web Server. This issue affects Rotaban: from V2026.06.002 before V2026.06.003.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Başarsoft Information Technologies Inc. | Rotaban | V2026.06.002 – before V2026.06.003 |
Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
References
- https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0367 government-resource