CVE-2023-28395: Osprey Pump Controller version 1.01 is vulnerable to a weak session token generation algorithm that can be pre

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HIGH 8.3MITIGATE

CVE-2023-28395 is a high-severity flaw (CVSS 8.3) affecting osprey pump controller firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-338
Published	2023-03-28
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: propumpservice

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-03-28 20:15 UTCPublished CVE record published
2026-06-17 05:47 UTCUpdated Record last modified

propumpservice osprey pump controller firmware MITIGATE

Affected: 1.01

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.01

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-28395?

osprey pump controller firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-28395 being exploited?

CVE-2023-28395 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-28395 affect?

CVE-2023-28395 affects osprey pump controller firmware. Severity is high (CVSS 8.3). 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 se

How urgent is CVE-2023-28395?

Priority 42/100. High severity

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CVE-2023-28648 HIGH 7.5 MITIGATE Osprey Pump Controller version 1.01 inputs passed to a GET parameter are not properly sanitized before being r
CVE-2023-28398 CRITICAL 9.8 MITIGATE Osprey Pump Controller version 1.01 could allow an unauthenticated user to create an account and bypass authen

References

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