CVE-2025-43989
CVE-2025-43989 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. 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-78.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- EPSS exploit prediction: 6% (92nd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-24632
- Weakness: CWE-78
- Published:
- Last modified:
Description
The /goform/formJsonAjaxReq POST endpoint of Shenzhen Tuoshi NR500-EA RG500UEAABxCOMSLICv3.4.2731.16.43 devices mishandles the set_timesetting action with the ntpserver0 parameter, which is used in a system command. By setting a username=admin cookie (bypassing normal session checks), an unauthenticated attacker can use that parameter to execute arbitrary OS commands.
Frequently asked questions
- What is CVE-2025-43989?
- The /goform/formJsonAjaxReq POST endpoint of Shenzhen Tuoshi NR500-EA RG500UEAABxCOMSLICv3.4.2731.16.43 devices mishandles the set_timesetting action with the ntpserver0 parameter, which is used in a system command. By setting a username=admin cookie (bypassing normal session checks), an unauthenticated attacker can use that parameter to execute arbitrary OS commands.
- How severe is CVE-2025-43989?
- CVE-2025-43989 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.
- Is CVE-2025-43989 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-43989?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-43989 have an EU (EUVD) identifier?
- Yes. CVE-2025-43989 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24632.
- When was CVE-2025-43989 published?
- CVE-2025-43989 was published on 2025-08-13 and last updated on 2026-06-17.
References
- https://drive.proton.me/urls/H7J1DPNA00#XrmRLENzyZAp
- https://drive.proton.me/urls/QDVK6E2SBR#8LlpbHWzHdmr
- https://github.com/actuator/cve/blob/main/Tuoshi/CVE-2025-43989.txt
- https://github.com/actuator/cve/tree/main/Tuoshi
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