CVE-2020-37102

Adaware Web Companion 4.9.2159 - 'WCAssistantService' Unquoted Service Path

High8.5Public exploitEPSS 0.14%

Published: 3 Feb 2026
Updated: 5 Mar 2026
Reserved: 1 Feb 2026
Assigned by: VulnCheck

Description

Adaware Web Companion 4.9.2159 contains an unquoted service path vulnerability in the WCAssistantService that allows local attackers to potentially execute arbitrary code. Attackers can exploit the unquoted binary path to inject malicious executables that will be run with LocalSystem privileges during service startup.

Public exploit

A reference of the record is tagged as an exploit or proof of concept: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.

ExploitDB-47852 (opens in a new tab)exploit

Timeline

2026
1 Feb 2026
1 Feb 2026
ID reserved
By VulnCheck
3 Feb 20262 days later
3 Feb 2026· 2 days later
Published
5 Mar 202630 days later
5 Mar 2026· 30 days later
Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2020-37102, by who scored it
Scored by	CVSS	Score	Vector
VulnCheckCNA (assigner)	4.0	High8.5	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
VulnCheckCNA (assigner)	3.1	High7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Deferred	4.0	High8.5	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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

EPSS (exploitation in 30 days): 0.14% · top 96% of all CVEs (7 Nov 2026)
CISA SSVC: Exploitation: poc · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.5.

Weakness

CWE-428: Unquoted Search Path or Element (opens in a new tab)All about CWE-428 and its CVEs

Affected products

Lavasoft · Web Companion
- affected 4.9.2159

References (4)

ExploitDB-47852 (opens in a new tab)exploit
Vendor Homepage (opens in a new tab)product
Software Download Link (opens in a new tab)product
VulnCheck Advisory: Adaware Web Companion 4.9.2159 - 'WCAssistantService' Unquoted Service Path (opens in a new tab)third-party-advisory

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

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Record last updated 5 Mar 2026, 01:27 UTC.