CVE-2025-66565
Essential information
- Published
- 09/12/2025 16:18
- Modified
- 11/12/2025 16:35
- Author
- —
- Creator
- —
- CVSS
- 9.3 CRITICAL (v3) 9.3 CRITICAL (v4.0)
- CISA KEV
- No
- CWE
- —
- CVSS vector
-
—
—
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS metrics
- Access vector
- —
- Access complexity
- —
- Authentication
- —
- Confidentiality impact
- —
- Integrity impact
- —
- Availability impact
- —
- Exploitability
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- —
- Attack complexity
- —
- Privileges required
- —
- User interaction
- —
- Scope
- —
- Confidentiality impact
- —
- Integrity impact
- —
- Availability impact
- —
- Exploit code maturity
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- NETWORK
- Attack complexity
- LOW
- Attack requirements
- NONE
- Privileges required
- NONE
- User interaction
- NONE
- Confidentiality (V)
- HIGH
- Confidentiality (S)
- NONE
- Integrity (V)
- HIGH
- Integrity (S)
- NONE
- Availability (V)
- LOW
- Availability (S)
- NONE
- Exploit maturity
- NOT_DEFINED
Description
Fiber Utils is a collection of common functions created for Fiber. In versions 2.0.0-rc.3 and below, when the system's cryptographic random number generator (crypto/rand) fails, both functions silently fall back to returning predictable UUID values, including the zero UUID "00000000-0000-0000-0000-000000000000". The vulnerability occurs through two related but distinct failure paths, both ultimately caused by crypto/rand.Read() failures, compromising the security of all Fiber applications using these functions for security-critical operations. This issue is fixed in version 2.0.0-rc.4.
NVD status
- Status
- Analyzed — CVE has had analysis completed and all data associations made.
- Source
- [email protected]
- NVD
- View on NVD
Affected products (CPE)
| Product | CPE |
|---|---|
| gofiber / utils | cpe:2.3:a:gofiber:utils:*:*:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:beta1:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:beta10:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:beta11:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:beta12:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:beta13:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:beta14:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:beta2:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:beta3:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:beta4:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:beta5:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:beta6:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:beta7:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:beta8:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:beta9:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:rc1:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:rc2:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:rc3:*:*:*:go:*:* |
| gofiber / utils | cpe:2.3:a:gofiber:utils:2.0.0:rc4:*:*:*:go:*:* |