CVE-2020-1830Network attack vector

Service interruption via IPsec out-of-bounds read

Published Feb 17, 2020 · Updated Aug 4, 2024

An out-of-bounds read in Huawei NIP6800 V500R001C30, V500R001C60SPC500, and V500R005C00 allows remote attackers to interrupt service. A crafted IPsec message reaches a memory-management error in the IPsec module, causing a one-byte read beyond its allocated buffer. No authentication or user interaction is required, but message construction is complex; the reported consequence is abnormal service, not data disclosure or modification.

CVSS severity3.7
Low
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds read in Huawei NIP6800 V500R001C30, V500R001C60SPC500, and V500R005C00 allows remote attackers to interrupt service. A crafted IPsec message reaches a memory-management error in the IPsec module, causing a one-byte read beyond its allocated buffer. No authentication or user interaction is required, but message construction is complex; the reported consequence is abnormal service, not data disclosure or modification.

The record

CVE
CVE-2020-1830
Published
Feb 17, 2020
Updated
Aug 4, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
NIP6800
Classifications
CWE-125, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 17, 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 privilegesunauthenticated

What is affected?

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

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.7HuaweiCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
3.5HuaweiCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:F/RL:O/RC:C
5.0NIST NVDAV:N/AC:L/Au:N/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
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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