CVE-2020-24680 | Improper Credential Storage in Symphony Plus

In S+ Operations and S+ Historian, the passwords of internal users (not Windows Users) are encrypted but improperly stored in a database.

Published: 2020-12-22 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-24680 is rated Low Risk (34.4/100): CVSS High severity, with low exploitation likelihood (EPSS 0.26%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-24680

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.04% 0.26% +0.23%
2 2025-03-30 0.07% 0.04% -0.04%
3 2025-03-29 — 0.07% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-24680

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.0 3.1 HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.0 5.9 [email protected]
7.0 3.1 HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.0 5.9 [email protected]
4.6 2.0 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 6.4 [email protected]

Weakness enumeration for CVE-2020-24680

Affected software / configurations for CVE-2020-24680

Vendor Product Version Raw CPE
abb symphony_\+_historian 3.0 cpe:2.3:a:abb:symphony_\+_historian:3.0:*:*:*:*:*:*:*
abb symphony_\+_historian 3.1 cpe:2.3:a:abb:symphony_\+_historian:3.1:*:*:*:*:*:*:*
abb symphony_\+_operations 1.1 cpe:2.3:a:abb:symphony_\+_operations:1.1:*:*:*:*:*:*:*
abb symphony_\+_operations 2.0 cpe:2.3:a:abb:symphony_\+_operations:2.0:*:*:*:*:*:*:*
abb symphony_\+_operations 2.1 cpe:2.3:a:abb:symphony_\+_operations:2.1:sp1:*:*:*:*:*:*
abb symphony_\+_operations 2.1 cpe:2.3:a:abb:symphony_\+_operations:2.1:sp2:*:*:*:*:*:*
abb symphony_\+_operations 3.0 cpe:2.3:a:abb:symphony_\+_operations:3.0:*:*:*:*:*:*:*
abb symphony_\+_operations 3.1 cpe:2.3:a:abb:symphony_\+_operations:3.1:*:*:*:*:*:*:*
abb symphony_\+_operations 3.2 cpe:2.3:a:abb:symphony_\+_operations:3.2:*:*:*:*:*:*:*
abb symphony_\+_operations 3.3 cpe:2.3:a:abb:symphony_\+_operations:3.3:*:*:*:*:*:*:*

References for CVE-2020-24680

cvelogic Threat Intelligence