CVE-2020-9101

There is an out-of-bounds write vulnerability in some products. An unauthenticated attacker crafts malformed packets with specific parameter and sends the packets to the affected products. Due to insufficient validation of packets, which may be exploited to cause the process reboot. Affected product versions include: IPS Module versions V500R005C00, V500R005C10; NGFW Module versions V500R005C00, V500R005C10; Secospace USG6300 versions V500R001C30, V500R001C60, V500R005C00, V500R005C10; Secospace USG6500 versions V500R001C30, V500R001C60, V500R005C00, V500R005C10; Secospace USG6600 versions V500R001C30, V500R001C60, V500R005C00, V500R005C10; USG9500 versions V500R001C30, V500R001C60, V500R005C00, V500R005C10

Published: 2020-07-18 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-9101 is rated Low Risk (28.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.04%). 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-2020-9101

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 0.05% 0.04% -0.01%
2 2025-03-29 0.04% 0.05% +0.01%
3 2025-03-17 — 0.04% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-9101

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:N)
No account or special rights needed—anonymous or random user is enough.
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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]
3.3 2.0 LOW
AV:A/AC:L/Au:N/C:N/I:N/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:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 6.5 2.9 [email protected]

Weakness enumeration for CVE-2020-9101

Affected software / configurations for CVE-2020-9101

Vendor Product Version Raw CPE
huawei ips_module_firmware v500r005c00 cpe:2.3:o:huawei:ips_module_firmware:v500r005c00:*:*:*:*:*:*:*
huawei ips_module_firmware v500r005c10 cpe:2.3:o:huawei:ips_module_firmware:v500r005c10:*:*:*:*:*:*:*
huawei ngfw_module_firmware v500r005c00 cpe:2.3:o:huawei:ngfw_module_firmware:v500r005c00:*:*:*:*:*:*:*
huawei ngfw_module_firmware v500r005c10 cpe:2.3:o:huawei:ngfw_module_firmware:v500r005c10:*:*:*:*:*:*:*
huawei secospace_usg6300_firmware v500r001c30 cpe:2.3:o:huawei:secospace_usg6300_firmware:v500r001c30:*:*:*:*:*:*:*
huawei secospace_usg6300_firmware v500r001c60 cpe:2.3:o:huawei:secospace_usg6300_firmware:v500r001c60:*:*:*:*:*:*:*
huawei secospace_usg6300_firmware v500r005c00 cpe:2.3:o:huawei:secospace_usg6300_firmware:v500r005c00:*:*:*:*:*:*:*
huawei secospace_usg6300_firmware v500r005c10 cpe:2.3:o:huawei:secospace_usg6300_firmware:v500r005c10:*:*:*:*:*:*:*
huawei secospace_usg6500_firmware v500r001c30 cpe:2.3:o:huawei:secospace_usg6500_firmware:v500r001c30:*:*:*:*:*:*:*
huawei secospace_usg6500_firmware v500r001c60 cpe:2.3:o:huawei:secospace_usg6500_firmware:v500r001c60:*:*:*:*:*:*:*
huawei secospace_usg6500_firmware v500r005c00 cpe:2.3:o:huawei:secospace_usg6500_firmware:v500r005c00:*:*:*:*:*:*:*
huawei secospace_usg6500_firmware v500r005c10 cpe:2.3:o:huawei:secospace_usg6500_firmware:v500r005c10:*:*:*:*:*:*:*
huawei secospace_usg6600_firmware v500r001c30 cpe:2.3:o:huawei:secospace_usg6600_firmware:v500r001c30:*:*:*:*:*:*:*
huawei secospace_usg6600_firmware v500r001c60 cpe:2.3:o:huawei:secospace_usg6600_firmware:v500r001c60:*:*:*:*:*:*:*
huawei secospace_usg6600_firmware v500r005c00 cpe:2.3:o:huawei:secospace_usg6600_firmware:v500r005c00:*:*:*:*:*:*:*
huawei secospace_usg6600_firmware v500r005c10 cpe:2.3:o:huawei:secospace_usg6600_firmware:v500r005c10:*:*:*:*:*:*:*
huawei usg9500_firmware v500r001c30 cpe:2.3:o:huawei:usg9500_firmware:v500r001c30:*:*:*:*:*:*:*
huawei usg9500_firmware v500r001c60 cpe:2.3:o:huawei:usg9500_firmware:v500r001c60:*:*:*:*:*:*:*
huawei usg9500_firmware v500r005c00 cpe:2.3:o:huawei:usg9500_firmware:v500r005c00:*:*:*:*:*:*:*
huawei usg9500_firmware v500r005c10 cpe:2.3:o:huawei:usg9500_firmware:v500r005c10:*:*:*:*:*:*:*

References for CVE-2020-9101

cvelogic Threat Intelligence