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.

CVSS 4.0

8.4CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-25)

CWE

CWE-257

Published

2025-12-15

Modified

2026-10-07

Record from

the NVD, synced 2026-10-19

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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