CVE-2021-22300

Sensitive-data disclosure via non-expiring command temporary file

Published Feb 6, 2021 · Updated Aug 3, 2024

Information disclosure in Huawei eCNS280_TD V100R005C00 and V100R005C10 allows local users to read sensitive data from a temporary file. A command lacks a timeout exit mechanism, leaving its associated temporary file containing sensitive information available for inter-process access. Exploitation requires high privileges and access to the affected process; the documented consequence is disclosure only.

CVSS severity4.1
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Huawei eCNS280_TD V100R005C00 and V100R005C10 allows local users to read sensitive data from a temporary file. A command lacks a timeout exit mechanism, leaving its associated temporary file containing sensitive information available for inter-process access. Exploitation requires high privileges and access to the affected process; the documented consequence is disclosure only.

The record

CVE
CVE-2021-22300
Published
Feb 6, 2021
Updated
Aug 3, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
eCNS280_TD
Classifications
CWE-312, T1005
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 6, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=V100R005C00
  2. Affected versionversion=V100R005C10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Huawei Technologies Co., Ltd. · eCNS280_TDversion=V100R005C00; version=V100R005C10

Published CVSS scores

4.1Huawei Technologies Co., Ltd.CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
3.8Huawei Technologies Co., Ltd.CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C
1.9NISTAV:L/AC:M/Au:N/C:P/I:N/A:N
4.1NISTCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-312Cleartext Storage of Sensitive Information
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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