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.
CVE-2025-34180
This high-severity CVE scores 8.4 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 93% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.4
- EG Score
- 8.4(medium)
- EPSS
- 6.1%
- KEV
- Not listed
Published
December 15, 2025
Last Modified
April 15, 2026
References (3)
- disclosure@vulncheckhttps://kb.netsupportsoftware.com/knowledge-base/updating-and-securing-netsupport-manager/
- disclosure@vulncheckhttps://ret2.me/post/2025-12-04-exploiting-netsupport-gateway/
- disclosure@vulncheckhttps://www.vulncheck.com/advisories/netsupport-manager-gateway-key-reversible-encoding-credential-recovery
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 45× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 119 total refreshes for this CVE.
- 2026-07-22 14:07 UTCEPSS rescore
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Frequently asked(5)
What is CVE-2025-34180?
When was CVE-2025-34180 disclosed?
Is CVE-2025-34180 actively exploited?
What is the CVSS score of CVE-2025-34180?
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Dependency Blast Radius
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