CVE-2020-13535: kepware linkmaster Incorrect Default Permissions
CVSS: 9.3v3.0CriticalModified
Published 18-12-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-13535 is a critical (CVSS 9.3) Incorrect Default Permissions vulnerability in kepware linkmaster. EPSS estimates a 0.69% chance of exploitation in the next 30 days, higher than 52.1% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.3/10
010
Critical · v3.0 (CVE.org)EPSS score
0.69%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 18-12-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A privilege escalation vulnerability exists in Kepware LinkMaster 3.0.94.0. In its default configuration, an attacker can globally overwrite service configuration to execute arbitrary code with NT SYSTEM privileges.
CVSS metrics
4 scores · 2 sources · 3 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
Critical 9.3Preferred score · CVE.org (CNA)
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST9.3CriticalCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
High 7.2Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
0.69%
Chance of exploitation in the next 30 days
Percentile
52%
Versus all other CVEs
30-day change
0.00 pp
From 0.69% on 21-09-2026
21-09-202621-10-2026
EPSS score0.69%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (talosintelligence.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Kepware1 product
- linkmaster3.0.94.0
1 vendor · 1 product
References
1 links- talosintelligence.com/vulnerability_reports/TALOS-2020-1147X Refsource MISCExploitThird Party Advisory