CVE-2020-7847

The ipTIME NAS product allows an arbitrary file upload vulnerability in the Manage Bulletins/Upload feature, which can be leveraged to gain remote code execution. This issue affects: pTIME NAS 1.4.36.

Published: 2021-02-23 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-7847 is rated Moderate Risk (45.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.27%). Review affected assets and schedule remediation.

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-2020-7847

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 2025-03-30 0.85% 0.27% -0.57%
2 2025-03-29 0.27% 0.85% +0.57%
3 2025-03-17 — 0.27% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-7847

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.4 3.1 HIGH
CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
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:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
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.
 1.5 5.9 [email protected]
8.0 3.1 HIGH
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
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: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.
 2.1 5.9 [email protected]
5.2 2.0 MEDIUM
AV:A/AC:L/Au:S/C:P/I:P/A:P Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
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:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 5.1 6.4 [email protected]

Weakness enumeration for CVE-2020-7847

Affected software / configurations for CVE-2020-7847

Vendor Product Version Raw CPE
iptime nas-i_firmware < 1.4.36 cpe:2.3:o:iptime:nas-i_firmware:*:*:*:*:*:*:*:*
iptime nas-ii_firmware < 1.4.36 cpe:2.3:o:iptime:nas-ii_firmware:*:*:*:*:*:*:*:*
iptime nas-iie_firmware < 1.4.36 cpe:2.3:o:iptime:nas-iie_firmware:*:*:*:*:*:*:*:*
iptime nas101_firmware < 1.4.36 cpe:2.3:o:iptime:nas101_firmware:*:*:*:*:*:*:*:*
iptime nas1dual_firmware < 1.4.36 cpe:2.3:o:iptime:nas1dual_firmware:*:*:*:*:*:*:*:*
iptime nas2dual_firmware < 1.4.36 cpe:2.3:o:iptime:nas2dual_firmware:*:*:*:*:*:*:*:*
iptime nas3_firmware < 1.4.36 cpe:2.3:o:iptime:nas3_firmware:*:*:*:*:*:*:*:*
iptime nas4_firmware < 1.4.36 cpe:2.3:o:iptime:nas4_firmware:*:*:*:*:*:*:*:*
iptime nas4dual_firmware < 1.4.36 cpe:2.3:o:iptime:nas4dual_firmware:*:*:*:*:*:*:*:*

References for CVE-2020-7847

cvelogic Threat Intelligence