Manager-io/Manager: Complete Bypass of SSRF Protection via Time-of-Check Time-of-Use (TOCTOU)
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
Manager-io/Manager is accounting software. In Manager Desktop and Server versions 25.11.1.3085 and below, a critical vulnerability permits unauthorized access to internal network resources. The flaw lies in the fundamental design of the DNS validation mechanism. A Time-of-Check Time-of-Use (TOCTOU) condition that allows attackers to bypass network isolation and access internal services, cloud metadata endpoints, and protected network segments. The Desktop edition requires no authentication; the Server edition requires only standard authentication. This issue is fixed in version 25.11.1.3086.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Manager-io | Manager | before 25.11.1.3086 | 25.11.1.3086 | Patch available | CNA |
- Manager VendorManager-io Affected before 25.11.1.3086 Fixed in 25.11.1.3086 Patch available CNA
Remediation
- Fix · CNA Manager (Manager-io) Fixed in 25.11.1.3086
Timeline
- 2026-10-02 Threatist record created from CVE-2025-64180
More Manager-io vulnerabilities
- TI-2025-33965 Manager-io/Manager allows unauthenticated full read server-side request forgery in "proxy" endpoint CVSS 3.1CRITICAL 10.0
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences