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01 Record

CVE-2021-3678

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in star7th/showdoc

HighPUBLISHEDCNA: @huntrdev
CNA base score7.5 CVSS v3.xCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

02 Description

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in star7th/showdoc

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
1.06% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 64.4% of scored records. A rank, not a probability.
NVD base score
5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-08-04 13:14Z5 YR AGO
Last updated
2024-08-03 17:01Z2 YR AGO
Reserved
2021-08-03
Assigning CNA
@huntrdev
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
  • CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)Base
Data version
5.1
Document digest
51fed7841e589392d58941ff2b70a04473da18c183a1b804b01ec10ae85e218a

05 Affected products

VendorProductVersionsPlatforms
star7thstar7th/showdoc<= 2.9.7—

06 References