Viscosity DLL untrusted search path
A vulnerability was found in Viscosity 1.6.7. It has been classified as critical. This affects an unknown part of the component DLL Handler. The manipulation leads to untrusted search path. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.6.8 is able to address this issue. It is recommended to upgrade the affected component.
- Published
- Jun 30, 2022
- Updated
- Jun 16, 2026
- EPSS
- 1.3% · 69th percentile
- CWE
- CWE-426
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.3%
CISA SSVC decision
- Exploitation
- proof of concept
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 7.8
- CNA · VulDB
- 8.8
- 1.0 point gap
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| sparklabs | viscosity | cpe:2.3:a:sparklabs:viscosity |
| microsoft | windows | cpe:2.3:o:microsoft:windows |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- sparklabs viscosity1.6.7
Versions reported by the vendor
Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.
unspecified Viscosity
- 1.6.7affected
Same product
sparklabs: all recordsOther highest-scoring records for the same primary product.
- CVE-2012-4284A Privilege Escalation vulnerability exists in Viscosity 1.4.1 on Mac OS X due to a path name validation issue in the setuid-set ViscosityHe60This week
- CVE-2020-5180Viscosity 1.8.2 on Windows and macOS allows an unprivileged user to set a subset of OpenVPN parameters, which can be used to load a maliciou31Monitor
- CVE-2025-4412TCC Bypass via Dylib Loading in Viscosity.app19Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| unspecified Viscosity | 1.6.8 · description | Vendor (CNA) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-426 · Untrusted Search PathCVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- seclists.org/fulldisclosure/2017/Feb/1
- vuldb.com/?id.96639
- www.sparklabs.com/blog/viscosity-for-mac-windows-version-1-6-8/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.