CVE-2021-40007Network attack vector

Authenticated information disclosure via improper log output

Published Dec 13, 2021 · Updated Aug 4, 2024

Information disclosure in Huawei eCNS280_TD V100R005C10SPC650 allows remote authenticated users to read sensitive data via device log files. Improper log output management exposes information when an attacker with device access reads the affected log file. The flaw requires login and log-file access; reported impact is confidentiality loss without integrity or availability effects.

CVSS severity6.5
Medium
EPSS probability0.55%
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 V100R005C10SPC650 allows remote authenticated users to read sensitive data via device log files. Improper log output management exposes information when an attacker with device access reads the affected log file. The flaw requires login and log-file access; reported impact is confidentiality loss without integrity or availability effects.

The record

CVE
CVE-2021-40007
Published
Dec 13, 2021
Updated
Aug 4, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
eCNS280_TD
Classifications
CWE-116, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=V100R005C10SPC650

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Huawei Technologies Co., Ltd. · eCNS280_TDversion=V100R005C10SPC650

Published CVSS scores

4.0NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
6.0Huawei PSIRTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C
6.5Huawei PSIRTCVSS:3.1/AV:N/AC:L/PR:L/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.

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No observations available

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

Weakness, pattern, technique

CWE-116Improper Encoding or Escaping of Output
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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