CVE-2025-34180 json
NetSupport Manager < 14.12.0001 Gateway Key Reversible Encoding Credential Recovery
published 2025-12-15 10 mo ago modified 2026-10-07 32 d ago also EUVD-2025-203379
- cvss
- 8.4
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 7%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- NetSupport Software Manager 14.12.0001
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 10 mo ago
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- ret2.me https://ret2.me/post/2025-12-04-exploiting-netsupport-gateway/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.4 | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H |
| CNA | 4.0 | 8.4 | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- NetSupport Software Manager
Classification
- Weakness
-
- CWE-257 Storing Passwords in a Recoverable Format
References
-
kb.netsupportsoftware.com
/knowledge-base/updating-and-securing-netsupport-manager/
vendor-advisory, patch
-
ret2.me
/post/2025-12-04-exploiting-netsupport-gateway/
technical-description, exploit
-
vulncheck.com
/advisories/netsupport-manager-gateway-key-reversible-encoding-credential-recovery
third-party-advisory
Sources
- CVE List CVE-2025-34180
- NVD CVE-2025-34180
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.