8.8

CVE-2020-13552: advantech webaccess\/scada Incorrect Default Permissions

CVSS: 8.8v3.0HighModified
Published 17-02-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-13552 is a high (CVSS 8.8) Incorrect Default Permissions vulnerability in advantech webaccess\/scada. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 42.1% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
45/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.0 (CVE.org)
EPSS score
0.50%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 17-02-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An exploitable local privilege elevation vulnerability exists in the file system permissions of Advantech WebAccess/SCADA 9.0.1 installation. In privilege escalation via multiple service executables in installation folder of WebAccess, an attacker can either replace binary or loaded modules to execute code with NT SYSTEM privilege.

CVSS metrics

4 scores · 2 sources · 3 versions

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

0.00 pp

From 0.50% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.50%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (talosintelligence.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Advantech1 product

1 vendor · 1 product

References

1 links