Vulnerability

CVE-2026-11839

Critical· 9.9CVSS9.9EPSS0%

.rules3/5

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.

Threat signal

99/100

Severe

Severity

critical

CVSS

9.9

EPSS

Active

CVSS

v3.1via NVDOpen in FIRST calculator →

9.9/ 10CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack VectorNetworkExploitable remotely over the internet — no local access needed.
Attack ComplexityLowNo special conditions — exploit works reliably.
Privileges RequiredLowStandard user privileges sufficient.
User InteractionNoneFully automated — no victim action needed.
ScopeChangedImpact extends beyond the vulnerable component (e.g. sandbox escape).
Confidentiality ImpactHighTotal disclosure of sensitive data.
Integrity ImpactHighTotal compromise of integrity — full data modification possible.
Availability ImpactHighTotal loss of availability — full DoS possible.

EPSS

Exploit prediction · 30-day horizonFIRST.org →

0.04%

probability of exploitation in next 30 days

p13

higher than 13% of all CVEs

Low exploitation likelihood — defer if no other signals fire.

Vendor VEX

No VEX statements published for CVE-2026-11839. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.

SSVCTrack

Total impact on non-trivial mission systems

exploitation: none
automatable: yes
impact: total
mission: support

Lifecycle

2026-06-11Published
2026-06-11Last modified1 source

References

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

No source-event history recorded yet. New revisions will appear here as ingestors re-fetch this CVE.