What is CVE-2023-28395?

CVE-2023-28395 is a high-severity vulnerability in Propump And Controls, Inc. Osprey Pump Controller, classified under Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). CVSS score: 8.3/10. Published 2023-03-28.

How severe is CVE-2023-28395?

High severity. CVSS v3 base score is 8.3 out of 10.

Vulnerability in Propump And Controls, Inc. Osprey Pump Controller

CVE-2023-28395

Osprey Pump Controller version 1.01 is vulnerable to a weak session token generation algorithm that can be predicted and can aid in authentication and authorization bypass. This may allow an attacker to hijack a session by predicting the session id and gain unauthorized access to the product.

Published 2023-03-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L.

EPSS exploit prediction

EPSS: 0.006 (49.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Propump And Controls, Inc. Osprey Pump Controller — versions 1.01
Propumpservice Osprey Pump Controller
Propumpservice Osprey Pump Controller Firmware — versions 1.01

Weakness classification (CWE)

CWE-338 — Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

References

www.cisa.gov/news-events/ics-advisories/icsa-23-082-06 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2023-28395?: CVE-2023-28395 is a high-severity vulnerability in Propump And Controls, Inc. Osprey Pump Controller, classified under Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). CVSS score: 8.3/10. Published 2023-03-28.
How severe is CVE-2023-28395?: High severity. CVSS v3 base score is 8.3 out of 10.