1E Client: Improper Link Resolution Before File Access
CVE-2025-1683 is a high-severity improper link resolution before file access vulnerability in 1E Client from 1E, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. Affected 1E Client versions: 24.5 and earlier; 25.1 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.22% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Platform to 25.3 or a later version.
- Read the advisory on teamviewer.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| 1E | 1E Client | 24.5 and earlier; 25.1 and earlier | Not stated |
| 1e | Platform | before 25.3 | 25.3 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (1e.com).
Official description
Improper link resolution before file access in the Nomad module of the 1E Client, in versions prior to 25.3, enables an attacker with local unprivileged access on a Windows system to delete arbitrary files on the device by exploiting symbolic links.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Link Resolution Before File Access
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
How developers prevent this class of flaw
- Follow the principle of least privilege when assigning access rights to entities in a software system. Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
More Improper Link Resolution Before File Access vulnerabilities (CWE-59)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Advisories
- teamviewer.com/en/resources/trust-center/security-bulletins/1e-2025-2001/Third Party Advisory
Third-party and government advisories
- nvd.nist.gov/vuln/detail/CVE-2025-1683Third Party Advisory, US Government Resource
Other references
- capec.mitre.org/data/definitions/27.htmlNot Applicable
- cwe.mitre.org/data/definitions/59.htmlNot Applicable
Other vulnerabilities in 1E Client
- 8.8 High severity
- 8.4 High severity
Recent Improper Link Resolution Before File Access vulnerabilities
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- 8.8 High severity
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- 7.1 High severity
Microsoft Windows Storage Link Following Exploited
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- 7.2 High severity
SimpleHelp Path Traversal Exploited
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