CVE-2021-27378
CRITICAL
9.8
CVSS Score
Published: February 18, 2021 at 03:35 AM UTC
Updated: June 17, 2026 at 03:44 AM UTC
1 product affected across 1 vendorRand Core
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Severity
CRITICAL9.8
Exploit prediction
EPSS 1%
Description
An issue was discovered in the rand_core crate before 0.6.2 for Rust. Because read_u32_into and read_u64_into mishandle certain buffer-length checks, a random number generator may be seeded with too little data.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
95%
0.6.0 ≤ v < 0.6.2
Affected range stops below 0.6.2, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (1)
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://rustsec.org/advisories/RUSTSEC-2021-0023.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-131
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