CVE-2026-27653: soliton systems k.k. soliton securebrowser for onegate Incorrect Default Permissions
CVSS: 6.7v3.0MediumAnalyzed
Published 27-02-2026Last modified 27-02-2026
Vulnerability summary
CVE-2026-27653 is a medium (CVSS 6.7) Incorrect Default Permissions vulnerability in soliton systems k.k. soliton securebrowser for onegate. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 2.9% of scored vulnerabilities.
CVSS score
6.7/10
010
Medium · v3.0 (CVE.org)EPSS score
0.14%
0%100%
Low · +0.05 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 27-02-2026PublishedVulnerability first disclosed.
- 27-02-2026Last modifiedVulnerability information updated.
Description
The installers for multiple products provided by Soliton Systems K.K. contain an issue with incorrect default permissions, which may allow arbitrary code to be executed with SYSTEM privileges.
CVSS metrics
5 scores · 2 sources · 3 versionsMedium 5.4Preferred score · CVE.org (CNA)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NSourcesAll 2 agree
- NVDNIST5.4MediumCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/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
Medium 6.7Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:HSourcesSingle source
Medium 6.7Preferred score · CVE.org (CNA)
CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST6.7MediumCVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.14%
Chance of exploitation in the next 30 days
Percentile
3%
Versus all other CVEs
30-day change
+0.05 pp
From 0.09% on 21-09-2026
21-09-202621-10-2026
EPSS score0.14%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-276Incorrect Default PermissionsDuring installation, installed file permissions are set to allow anyone to modify those files.
- CWE-863Incorrect AuthorizationThe product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
Affected systems
Soliton3 products
- securebrowser_for_onegate1.0.0
- securebrowser_ii≥ 2.0.0, < 2.0.15
- secureworkspace≥ 1.0.0, < 1.4.8
Soliton systems k.k.3 products
- soliton securebrowser for onegateV1.0.0
- soliton securebrowser iiV2.0.0 to V2.0.14
- soliton secureworkspace (formerly wrappingbox)V1.0.0 to V1.4.7
2 vendors · 6 products
References
2 links- www.soliton.co.jp/support/2026/006679.htmlVendor Advisory
- jvn.jp/en/jp/JVN41357120/Third Party Advisory