How severe is CVE-2023-28398?

CVE-2023-28398 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-28398 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28398?

CVE-2023-28398 affects Propumpservice Osprey Pump Controller Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28398?

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

When was CVE-2023-28398 published?

CVE-2023-28398 was published on 2023-03-28 and last updated on 2026-06-17.

CVE-2023-28398

CVE-2023-28398 is a critical-severity vulnerability in Propumpservice Osprey Pump Controller Firmware with a CVSS 3.x base score of 9.8. 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Propumpservice Osprey Pump Controller Firmware
Published: 2023-03-28
Last modified: 2026-06-17

Description

Osprey Pump Controller version 1.01 could allow an unauthenticated user to create an account and bypass authentication, thereby gaining unauthorized access to the system. A threat actor could exploit this vulnerability to create a user account without providing valid credentials. A threat actor who successfully exploits this vulnerability could gain access to the pump controller and cause disruption in operation, modify data, or shut down the controller.

Frequently asked questions

What is CVE-2023-28398?: Osprey Pump Controller version 1.01 could allow an unauthenticated user to create an account and bypass authentication, thereby gaining unauthorized access to the system. A threat actor could exploit this vulnerability to create a user account without providing valid credentials. A threat actor who successfully exploits this vulnerability could gain access to the pump controller and cause disruption in operation, modify data, or shut down the controller.
How severe is CVE-2023-28398?: CVE-2023-28398 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-28398 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28398?: CVE-2023-28398 affects Propumpservice Osprey Pump Controller Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28398?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-28398 published?: CVE-2023-28398 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:*:*:*:*:*:*:*

More vulnerabilities in Propumpservice Osprey Pump Controller Firmware

CVE-2023-28654 — Critical (CVSS 9.8): Osprey Pump Controller version 1.01 has a hidden administrative account that has the hardcoded password that allows…
CVE-2023-27886 — Critical (CVSS 9.8): Osprey Pump Controller version 1.01 is vulnerable to an unauthenticated OS command injection vulnerability. This can be…
CVE-2023-27394 — Critical (CVSS 9.8): Osprey Pump Controller version 1.01 is vulnerable an unauthenticated OS command injection vulnerability. This can be…
CVE-2023-28395 — High (CVSS 8.3): Osprey Pump Controller version 1.01 is vulnerable to a weak session token generation algorithm that can be predicted…
CVE-2023-28712 — High (CVSS 8.2): Osprey Pump Controller version 1.01 contains an unauthenticated command injection vulnerability that could allow system…
CVE-2023-28648 — High (CVSS 7.5): Osprey Pump Controller version 1.01 inputs passed to a GET parameter are not properly sanitized before being returned…

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Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →