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CVE-2020-8472

24
FAUCET Score

CVE-2020-8472 describes insufficient folder permissions in several ABB System 800xA products, including OPCServer for AC800M (v6.0 and earlier), Control Builder M Professional, MMSServer for AC800M, and Base Software for SoftControl (v6.1 and earlier). This vulnerability allows low-privileged authenticated users to read, modify, add, and delete system and application files. With a CVSS score of 7.8 (High), successful exploitation could lead to privilege escalation, system function disruption, and corruption of user applications. There is no evidence of active exploitation, public exploit code, or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 6.1CPE matchmatch criteria
cpe:2.3:a:abb:control_builder_m:*:*:*:*:professional:*:*:*
<= 6.1CPE matchmatch criteria
cpe:2.3:a:abb:mms_server:*:*:*:*:*:*:*:*
<= 6.0CPE matchmatch criteria
cpe:2.3:a:abb:opc_server:*:*:*:*:*:*:*:*
<= 6.1CPE matchmatch criteria
cpe:2.3:a:abb:base_software:*:*:*:*:*:softcontrol:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.27%
Probability of exploitation in next 30 days
EPSS Percentile
18.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0027 is in the 54th percentile among its peer group of 16,985 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

search.abb.com / library/Download.aspx
Vendor Advisory