CVE-2025-34180
CVE-2025-34180 is a high-severity vulnerability with a CVSS 4.0 base score of 8.4. 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-257.
Key facts
- Severity: High (CVSS 4.0 base score 8.4)
- EPSS exploit prediction: 0% (4th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-203379
- Weakness: CWE-257
- Published:
- Last modified:
Description
NetSupport Manager < 14.12.0001 relies on a shared Gateway Key for authentication between Manager/Control, Client, and Connectivity Server components. The key is stored using a reversible encoding scheme. An attacker who obtains access to a deployed client configuration file can decode the stored value to recover the plaintext Gateway Key. Possession of the Gateway Key allows unauthorized access to NetSupport Manager connectivity services and enables remote control of systems managed through the same key.
Frequently asked questions
- What is CVE-2025-34180?
- NetSupport Manager < 14.12.0001 relies on a shared Gateway Key for authentication between Manager/Control, Client, and Connectivity Server components. The key is stored using a reversible encoding scheme. An attacker who obtains access to a deployed client configuration file can decode the stored value to recover the plaintext Gateway Key. Possession of the Gateway Key allows unauthorized access to NetSupport Manager connectivity services and enables remote control of systems managed through the same key.
- How severe is CVE-2025-34180?
- CVE-2025-34180 has a CVSS 4.0 base score of 8.4, rated high severity.
- Is CVE-2025-34180 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-34180?
- 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.
- Does CVE-2025-34180 have an EU (EUVD) identifier?
- Yes. CVE-2025-34180 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203379.
- When was CVE-2025-34180 published?
- CVE-2025-34180 was published on 2025-12-15 and last updated on 2026-06-17.
References
- https://kb.netsupportsoftware.com/knowledge-base/updating-and-securing-netsupport-manager/
- https://ret2.me/post/2025-12-04-exploiting-netsupport-gateway/
- https://www.vulncheck.com/advisories/netsupport-manager-gateway-key-reversible-encoding-credential-recovery
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