01 Record
CVE-2019-5440
Use of cryptographically weak PRNG in the password recovery token generation of Revive Adserver < v4.2.1 causes a potential authentication bypass attack if an attacker exploits the password recovery
UnratedPUBLISHEDCNA: hackerone
CNA base scoreUnratedNo CNA CVSS vector
02 Description
Use of cryptographically weak PRNG in the password recovery token generation of Revive Adserver < v4.2.1 causes a potential authentication bypass attack if an attacker exploits the password recovery
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
- 1.57% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 75.0% of scored records. A rank, not a probability.
- NVD base score
- 8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- 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
- 2019-05-28 18:41Z7 YR AGO
- Last updated
- 2024-08-04 19:54Z2 YR AGO
- Reserved
- 2019-01-04
- Assigning CNA
- hackerone
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)Base
- Data version
- 5.1
- Document digest
- 47af8077715cc3abdfdad3cbace84dcc2d1b293bbeed588bfd08fb250f50b424
05 Affected products
VendorProductVersionsPlatforms
06 References
- hackerone.comhttps://hackerone.com/reports/576504