CVE-2020-1814Network attack vector

Service interruption via IPsec race condition

Published Feb 18, 2020 · Updated Aug 4, 2024

Dangling pointer dereference in Huawei NIP6800 firmware allows remote authenticated users to cause service interruption via IPsec operations. Improper synchronization between concurrent IPsec operations can dereference a stale pointer and leave affected services abnormal. Exploitation requires IPsec enabled, network access, and authenticated access; the documented consequence is service disruption rather than data disclosure or modification.

CVSS severity5.3
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Dangling pointer dereference in Huawei NIP6800 firmware allows remote authenticated users to cause service interruption via IPsec operations. Improper synchronization between concurrent IPsec operations can dereference a stale pointer and leave affected services abnormal. Exploitation requires IPsec enabled, network access, and authenticated access; the documented consequence is service disruption rather than data disclosure or modification.

The record

CVE
CVE-2020-1814
Published
Feb 18, 2020
Updated
Aug 4, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
NIP6800
Classifications
CWE-362, CWE-119, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 18, 2020CVE 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=V500R001C30
  2. Affected versionversion=V500R001C60SPC500
  3. Affected versionversion=V500R005C00

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Huawei Technologies Co., Ltd. · NIP6800version=V500R001C30; version=V500R001C60SPC500; version=V500R005C00

Published CVSS scores

4.9Huawei PSIRTCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:F/RL:O/RC:C
5.3NVDCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
3.5NVDAV:N/AC:M/Au:S/C:N/I:N/A:P

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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1499Endpoint Denial of Service

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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