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» CVE-2021-43930
Elcomplus SmartPTT is vulnerable as the backup and restore system does not adequately validate download requests, enabling malicious users to perform path traversal attacks and potentially download arbitrary files from the system.
NVD Status： Modified ，CVE State: published
Threat Intelligence & Risk Assessment for CVE-2021-43930
Conclusion & alert: CVE-2021-43930 is rated Low Risk (39.7/100) : CVSS Medium severity, with medium exploitation likelihood (EPSS 0.92%).Mandatory action: 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-2021-43930
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
0.25%
0.92%
+0.67%
2
2025-05-04
0.17%
0.25%
+0.08%
3
2025-04-29
—
0.17%
—
Full EPSS history
(7 records total)
Common vulnerability scoring system (CVSS) metrics for CVE-2021-43930
CVSS metrics for this CVE.
Base score
Version
Severity
Vector
Exploitability
Impact
Score source
4.9
3.1
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
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:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
1.2
3.6
[email protected]
4.9
3.1
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
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:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
1.2
3.6
[email protected]
4.0
2.0
MEDIUM
AV:N/AC:L/Au:S/C:P/I:N/A:N
Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
8.0
2.9
[email protected]
Weakness enumeration for CVE-2021-43930
Affected software / configurations for CVE-2021-43930
Vendor
Product
Version
Raw CPE
smartptt
smartptt_scada
1.1
cpe:2.3:a:smartptt:smartptt_scada:1.1:*:*:*:*:*:*:*
References for CVE-2021-43930
cvelogic
Threat Intelligence