Home/CVE/yii2 is vulnerable to Use of Predictable Algorithm in Random Number Generator
CVE

CVE-2021-3689

yii2 is vulnerable to Use of Predictable Algorithm in Random Number Generator

yii2 is vulnerable to Use of Predictable Algorithm in Random Number Generator.

HIGH · CVSS 7.5 EPSS 0.00449
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-1241Use of Predictable Algorithm in Random Number Generator
CWE-330Use of Insufficiently Random Values
▤

Affected Products & Versions

1
yiiframework yii>= 2.0.0 and < 2.0.43
⚠

Public Exploits & PoCs

1
pochuntr.dev · 50aad1d4-eb00-4573-b8a4-dbe38e2c229fhuntr.dev
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · security@huntr.dev
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 Aug 2021 · 11:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/yiisoft/yii2/commit/13f27e4d920a05d53236139e8b07007acd046a46PatchThird Party Advisory
Intelligence Graph · click any node to traverse
CVETechnique ActorTool Family
drag to reposition · click any node to traverse · button top-right enlarges
External lookups - second-class, for what we don’t hold ourselves
NVDCVE.orgCISAVulnersExploit-DBGitHub PoCVulnCheck KEVGreyNoise
Vulnerabilities
CISA KEV catalog
CWE weaknesses
CAPEC attack patterns
Package vulnerabilities
Threat intelligence
Threat actors
Tools & malware
ATT&CK techniques
IOCs
Detection & defense
Sigma rules
YARA rules
Atomic Red Team tests
D3FEND countermeasures
Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1
About
All capabilities
Live statistics
Data sources
Privacy policy
Terms of service
threatengine.sh  ·  Open-source threat intelligence platform  ·  100+ authoritative sources  ·  Every fact traces to its origin