CVE-2021-22342

There is an information leak vulnerability in Huawei products. A module does not deal with specific input sufficiently. High privilege attackers can exploit this vulnerability by performing some operations. This can lead to information leak. Affected product versions include: IPS Module versions V500R005C00, V500R005C10, V500R005C20; NGFW Module versions V500R005C00,V500R005C10, V500R005C20; SeMG9811 versions V500R005C00; USG9500 versions V500R001C00, V500R001C20, V500R001C30, V500R001C50, V500R001C60, V500R001C80, V500R005C00, V500R005C10, V500R005C20.

Published: 2021-06-22 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-22342 is rated Low Risk (34.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.56%). 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-2021-22342

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 0.14% 0.56% +0.42%
2 2025-03-30 0.27% 0.14% -0.13%
3 2025-03-29 — 0.27% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-22342

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]
4.0 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-2021-22342

Affected software / configurations for CVE-2021-22342

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 ips_module_firmware v500r005c20 cpe:2.3:o:huawei:ips_module_firmware:v500r005c20:*:*:*:*:*:*:*
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 ngfw_module_firmware v500r005c20 cpe:2.3:o:huawei:ngfw_module_firmware:v500r005c20:*:*:*:*:*:*:*
huawei semg9811_firmware v500r005c00 cpe:2.3:o:huawei:semg9811_firmware:v500r005c00:*:*:*:*:*:*:*
huawei usg9500_firmware v500r001c00 cpe:2.3:o:huawei:usg9500_firmware:v500r001c00:*:*:*:*:*:*:*
huawei usg9500_firmware v500r001c20 cpe:2.3:o:huawei:usg9500_firmware:v500r001c20:*:*:*:*:*:*:*
huawei usg9500_firmware v500r001c30 cpe:2.3:o:huawei:usg9500_firmware:v500r001c30:*:*:*:*:*:*:*
huawei usg9500_firmware v500r001c50 cpe:2.3:o:huawei:usg9500_firmware:v500r001c50:*:*:*:*:*:*:*
huawei usg9500_firmware v500r001c60 cpe:2.3:o:huawei:usg9500_firmware:v500r001c60:*:*:*:*:*:*:*
huawei usg9500_firmware v500r001c80 cpe:2.3:o:huawei:usg9500_firmware:v500r001c80:*:*:*:*:*:*:*
huawei usg9500_firmware v500r005c00 cpe:2.3:o:huawei:usg9500_firmware:v500r005c00:*:*:*:*:*:*:*
huawei usg9500_firmware v500r005c10 cpe:2.3:o:huawei:usg9500_firmware:v500r005c10:*:*:*:*:*:*:*
huawei usg9500_firmware v500r005c20 cpe:2.3:o:huawei:usg9500_firmware:v500r005c20:*:*:*:*:*:*:*

References for CVE-2021-22342

cvelogic Threat Intelligence