VAR-200708-0372
Vulnerability from variot - Updated: 2025-04-10 23:18Cisco VPN Client on Windows before 4.8.02.0010 allows local users to gain privileges by enabling the "Start Before Logon" (SBL) and Microsoft Dial-Up Networking options, and then interacting with the dial-up networking dialog box. Cisco VPN Client for Windows is prone to multiple local privilege-escalation vulnerabilities. Successfully exploiting these issues allows attackers with local, interactive access to affected computers to gain SYSTEM-level privileges. This facilitates the complete compromise of affected computers. Versions prior to 4.8.02.0010 and 5.0.01.0600 of Cisco VPN Client for the Microsoft Windows platform are vulnerable to these issues. These issues are tracked as Cisco Bug IDs CSCse89550 and CSCsj00785. "The Cisco VPN Client allows users to create IPSec VPN tunnels to Cisco VPN enabled devices. 1. Note that configuring these two settings does not require the user to have administrative privileges. 2. Unprivileged users can obtain privilege escalation through the use of any executable program Replacing the Cisco VPN Service executable causes arbitrary programs to run with the privileges of the LocalSystem account. The cause of this vulnerability is that the default file permissions assigned to cvpnd.exe (the Cisco VPN Service executable) during installation allow unprivileged interactive users Replace cvpnd.exe with any file.Since the Cisco VPN Service is a Windows service that runs with LocalSystem privileges, unprivileged users can easily elevate privileges
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.