How severe is CVE-2023-28395?

CVE-2023-28395 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2023-28395 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28395?

CVE-2023-28395 affects Propumpservice Osprey Pump Controller Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28395?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-28395 published?

CVE-2023-28395 was published on 2023-03-28 and last updated on 2026-06-17.

CVE-2023-28395

CVE-2023-28395 is a high-severity vulnerability in Propumpservice Osprey Pump Controller Firmware with a CVSS 3.x base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-338.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-338
Affected product: Propumpservice Osprey Pump Controller Firmware
Published: 2023-03-28
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2023-28395?: CVE-2023-28395 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2023-28395 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28395?: CVE-2023-28395 affects Propumpservice Osprey Pump Controller Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28395?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-28395 published?: CVE-2023-28395 was published on 2023-03-28 and last updated on 2026-06-17.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-23-082-06

Affected products (1)

cpe:2.3:o:propumpservice:osprey_pump_controller_firmware:1.01:*:*:*:*:*:*:*

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CVE-2026-2439 — Critical (CVSS 9.8): Concierge::Sessions versions from 0.8.1 before 0.8.5 for Perl generate insecure session ids. The generate_session_id…
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