VulnerabilityDeferred

CVE-2026-11839

Unrestricted upload of file with dangerous type vulnerability in Başarsoft Information Technologies Inc.

CRITICAL 9.9EPSS 0.34%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1: 9.9 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS: 0.34% probability · 27th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-434
Source: iletisim@usom.gov.tr

EPSS trend

EPSS 0.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0367

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.