What’s Vulnerable › Vulnerabilities

CVE-2025-34180: NetSupport Manager < 14.12.0001 Gateway Key Reversible Encoding Credential Recovery

• Severity: high (CVSS 8.4 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-15 · updated 2026-10-07
• Weakness: CWE-257

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.

Affected products

• NetSupport Software Manager: before 14.12.0001 — fixed in 14.12.0001

How to fix

Upgrade to a fixed version: NetSupport Software Manager 14.12.0001. Check the vendor advisory for mitigations.

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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